198 results about "Polybutylene succinate" patented technology

The invention discloses a degradable bamboo fiber express packaging bag and a preparation method thereof, and belongs to the technical field of express packaging. The packaging bag is prepared from, by mass, 32-42 parts of pretreated bamboo fibers, 22-28 parts of poly (butylene succinate), 9-14 parts of modified nano calcium carbonate, 12-16 parts of polycaprolactone, 6-11 parts of acetylated chitosan and the like, and the key raw materials are all treated through an exclusive pretreatment or modification process. The preparation method comprises the steps of raw material plasma activation, segmented high-speed mixing, vacuum drying, precise-parameter twin-screw extrusion granulation, secondary drying, precise film blowing, high-precision heat-sealing bag making and the like, and the technological parameters of all the steps are clear. The product disclosed by the invention can be efficiently degraded in a natural environment, has excellent tensile resistance, puncture resistance and impact resistance, is stable and controllable in processing process, and is adaptive to actual requirements of express packaging and industrial batch production.

The invention discloses an anti-shrinkage light, soft and elastic sole foaming material and a preparation method thereof, and belongs to the technical field of footwear products. The light, soft and elastic sole foaming material is formed by chemically foaming an EVA (Ethylene Vinyl Acetate) composite raw material, the EVA composite raw material is prepared from 50 to 70 parts of EVA, 20 to 40 parts of olefin thermoplastic elastomer, 10 to 20 parts of styrene elastomer, 1.5 to 3 parts of maleic anhydride grafted ethylene-octylene copolymer compatilizer, 0.4 to 0.8 part of peroxide cross-linking agent, 3 to 4 parts of foaming agent, 1 to 1.5 parts of zinc oxide, 1 to 1.5 parts of polyethylene wax substance and 0.5 to 1.5 parts of poly (butylene succinate). 0.3 to 1 part of polyamide 12 microspheres and 2 to 3 parts of nano montmorillonite. The foaming material can resist shrinkage when being used as a shoe sole part, and has good rebound performance and the like, so that the high-quality requirement of sneakers, the mass production stability and the like are met.

The invention discloses a high-barrier antibacterial packaging material, a preparation method thereof and a packaging bag, and belongs to the technical field of packaging, the packaging material comprises the following raw materials by weight: 75-85 parts of polylactic acid, 15-25 parts of poly (butylene succinate), 2-6 parts of epoxidized urushiol, and 1-3 parts of benzyl quaternary ammonium salt modified montmorillonite; the epoxidized urushiol is prepared by carrying out epoxidation reaction on urushiol and organic peroxy acid; the packaging material further comprises the following raw materials: 2-5 parts of sepiolite fiber loaded magnesium oxide; according to the invention, biodegradable polylactic acid and poly (butylene succinate) are taken as base materials, and epoxidized urushiol is taken as a reactive compatilizer, so that the compatibility between polylactic acid and poly (butylene succinate) is improved, and meanwhile, the binding property between a polymer matrix and benzyl quaternary ammonium salt modified montmorillonite and sepiolite loaded magnesium oxide is enhanced; the packaging material with good mechanical property, barrier property and antibacterial property is obtained.

The invention discloses a preparation method of an environment-friendly degradable single-sided perspective sticker, and belongs to the technical field of modified nano materials. The method comprises the following steps: (1) preparation of a multi-layer composite structure: mixing polylactic acid and poly (butylene succinate), adding nano-montmorillonite and a surface modifier, and carrying out melt blending to form a first-layer melt; stirring poly (butylene adipate-co-terephthalate) and fluorescent carbon nanodots to form a second layer of melt; the first layer, the pressure-sensitive adhesive layer and the second layer are co-extruded and compounded to form a film blank. And (2) construction of the nano-film: biaxially stretching the film blank, imprinting a micropore array, dipping in the silver nanoparticle suspension, and drying to obtain the nano-film. And (3) coating functionalization treatment: immersing into a fluorine-containing nano coating solution, and curing. And (4) post-treatment: carrying out secondary curing. The obtained single-sided perspective sticker is suitable for the fields of buildings, vehicle privacy films and the like, and solves the problems of serious pollution and slow degradation of a traditional sticker.

The invention relates to the technical field of plugging materials, and provides a low-temperature temporary plugging agent for fracturing and a preparation method thereof. The low-temperature temporary plugging agent for fracturing is prepared from the following raw material components: polycaprolactone, polylactic acid, polyglycolic acid, poly (butylene succinate), triglycidyl isocyanurate and silicon dioxide. The silicon dioxide comprises silicon dioxide A and silicon dioxide B; the silicon dioxide A is nano silicon dioxide; the silicon dioxide B is nano silicon dioxide composite micron silicon dioxide. Through the technical scheme, the problem of low strength of the low-temperature temporary plugging agent in related technologies is solved.

The invention relates to the technical field of high polymer materials, and discloses a preparation method of a modified master batch degradable material and application of the modified master batch degradable material in a packaging lunch box, and the modified master batch degradable material comprises the following components by mass: 75.0-93.8 parts of poly (butylene succinate); 5.0 to 20.0 parts of aliphatic series-aromatic copolyester; 1.0 to 4.0 parts of 1, 1 '-methylenebis-4, 1-phenylene-bismaleimide, and 1.0 to 4.0 parts of 1, 1'-methylenebis-4, 1-phenylene-bismaleimide; 0.5 to 2.0 parts of talcum powder; the method comprises the following steps: mixing dried poly (butylene succinate), aliphatic-aromatic copolyester, bismaleimide and talcum powder, performing reactive extrusion and melt mixing through a twin-screw extruder, and then cooling, pelletizing and drying the extrudate. Through specific components and a reactive extrusion process, a dynamic cross-linked network is formed by utilizing a Diels-Alder reaction, and the modified master batch degradable material of which the comprehensive mechanical property and the heat resistance are remarkably improved is prepared.

The invention belongs to the technical field of degradable and high-barrier modified plastics, and particularly relates to an environment-friendly, high-oxygen-barrier and water-resistant modified plastic, a plastic alloy and a functional product of the environment-friendly, high-oxygen-barrier and water-resistant modified plastic and the plastic alloy. According to the material, polyvinyl alcohol is used as a main component and is blended with auxiliaries such as a plasticizer and a cross-linking agent through a twin-screw melt extrusion technology, and modified plastic (HB-PVOH) with excellent barrier property, water resistance and mechanical property is formed. In order to further enhance the performance, the HB-PVOH can be co-extruded with polymers such as polyhydroxyalkanoate, polymethyl ethylene carbonate, polylactic acid, poly (butylene succinate) and the like to prepare binary or ternary plastic alloy. The material can be widely applied to the fields of high-end packaging, oxygen barrier coatings, environment-friendly packaging and the like, plastic or paper-plastic composite products are prepared through a multi-layer co-extrusion-film blowing, curtain coating or film spraying technology, the sustainable development trend of aluminum reduction, plastic reduction and fluorine reduction is met, and the material is a green packaging solution which is high in cost performance, environmentally friendly and practical.

The invention belongs to the technical field of preparation of molecular materials and adhesive tapes, and discloses a degradable mylar adhesive tape and a preparation method thereof, the degradable mylar adhesive tape comprises a degradable base material layer and a degradable adhesive layer; the degradable base material layer is prepared from the following raw materials in parts by mass: 25-35 parts of poly (butylene succinate) (PBS), 20-30 parts of polylactic acid (PLA), 10-15 parts of polycaprolactone (PCL), 8-12 parts of modified bamboo fiber powder, 3-5 parts of a compatibilizer and 0.5-1 part of an antioxidant; the degradable adhesive layer is prepared from the following raw materials in parts by mass: 40 to 50 parts of a modified starch-based adhesive, 15 to 25 parts of poly (butylene adipate-co-terephthalate) (PBAT), 10 to 15 parts of polyhydroxyalkanoate (PHA), 5 to 8 parts of sodium alginate-chitosan composite gel, 5 to 8 parts of an epoxypropane modifier, 1 to 2 parts of a cross-linking agent and 0.3 to 0.5 part of a de-foaming agent; by optimizing the raw material composition and the preparation process of the base material and the adhesive, the full-life-cycle degradability of the adhesive tape is realized, and meanwhile, excellent mechanical properties, insulativity and temperature resistance are ensured.

The invention relates to the technical field of high polymer materials, in particular to a degradable PHA tableware material and a preparation method thereof. The degradable PHA tableware material overcomes the problem that the degradable PHA tableware material is poor in mechanical property and antibacterial property. The preparation method comprises the following steps: drying polyhydroxyalkanoate, poly (butylene succinate), acetylated lignin, nano-zinc oxide, chitosan oligosaccharide and hexagonal boron nitride, carrying out melt extrusion on the dried materials, maleic anhydride grafted PHA, acetyl tributyl citrate and cinnamyl aldehyde in a double-screw extruder, carrying out injection molding, and carrying out plasma treatment activation. Polyurethane antibacterial slurry containing silver-loaded zeolite is sprayed, the tableware material with the body-surface synergistic enhancement function is finally obtained, and the impact strength, rigidity and antibacterial rate of the material are improved.

The present application relates to the technical field of degradable packaging. Particularly disclosed are a degradable food container and a preparation method therefor. The degradable food container comprises a paper food container base body and a degradable coating applied on the paper food container base body, wherein the degradable coating is prepared from the following raw materials in parts by weight: 40-50 parts of polylactic acid; 10-15 parts of polybutylene succinate; 15-20 parts of polyglycolic acid; 10-20 parts of cassava starch; 5-8 parts of an external additive; 1.2-1.8 parts of montmorillonite; 0.2-0.8 parts of boron nitride nanotubes; and 1.5-2.5 parts of modified hemp fibers. The preparation method therefor comprises: heating polylactic acid, polybutylene succinate and polyglycolic acid to a molten state, then adding cassava starch and an external additive thereto, finally adding montmorillonite, boron nitride nanotubes and modified hemp fibers thereto, performing extrusion granulation, melting and then coating same on the surface of the paper food container base body, cooling same, and then cutting and forming same into a container to obtain the degradable food container. The degradable food container of the present application can exhibit excellent temperature change resistance when being subjected to temperature change caused by an external environment.

The invention discloses a marine land full-natural-domain biodegradable plastic and a method for preparing the biodegradable plastic, and relates to the technical field of biodegradable plastics. Polyhydroxyalkanoate, polylactic acid and poly (butylene succinate) are used as main matrixes of the material, modified alginate gel is innovatively introduced, and the biodegradable plastic is prepared. The gel has photo-thermal and ionic characteristics, and under the condition of land illumination, the photo-thermal effect of the quantum dots triggers the gel to shrink and release lipase to accelerate hydrolysis; in a marine environment, sodium ion replacement promotes gel to be disintegrated and continuously releases enzyme molecules, the gel, matrix resin, natural fibers and a plasticizer are subjected to twin-screw melt blending extrusion, and the biodegradable plastic is prepared. The technical problems of response lag, insufficient enzyme activity protection and low degradation efficiency of traditional biodegradable plastics in a complex natural environment are effectively solved, and self-adaptive efficient degradation in sea and land environments is realized.

The invention discloses a paper-plastic composite reactive polyurethane hot melt adhesive for low-temperature coating, and belongs to the technical field of polyurethane adhesives, the paper-plastic composite reactive polyurethane hot melt adhesive for low-temperature coating comprises the following components by weight: 50-70 parts of modified polyester polyol, 30-50 parts of modified polyether polyol, 15-24 parts of diisocyanate, and 5-30 parts of tackifying resin, 0.1-1 part of a catalyst, 5-35 parts of a filler, 0.05-2 parts of a polymerization inhibitor and 0.1-0.5 part of an antioxidant; the modified polyester polyol is modified poly (butylene succinate); the modified polyether polyol is modified polypropylene glycol; the polyurethane hot melt adhesive prepared by modifying 5-norbornene-2-methylamine with a strong polar bond-NH and 3, 7-dimethyl octyl-6-ene-1-alcohol containing an insect-proof and mildew-proof functional component with polyhydric alcohol has relatively low melting temperature and viscosity, has initial viscous force of more than 1N and final viscous force of more than 5N at the same time, and has the characteristics of high temperature resistance, high temperature resistance, high temperature resistance and the like. The method can be well applied to paper-plastic compounding for low-temperature coating.

The present application relates to degradable extrusion webs, composites and polymer blend compositions thereof, and uses thereof. A degradable extruded web includes a plurality of interconnected strands, at least a portion of the strands being made from a polymer blend comprising a polylactic acid polymer composition, a polybutylene succinate, and a degradation additive comprising a degradation agent in a carrier resin. The present disclosure also relates to turf and methods of making turf using such degradable extrusion webs.

The invention discloses a black mulching film for rice cultivation and a preparation method thereof, and relates to the technical field of agricultural high polymer materials. When the black mulching film for rice cultivation is prepared, 1, 4-butanediol, butanedioic anhydride and itaconic acid are subjected to vacuum polycondensation to prepare a poly (butylene succinate)-itaconic acid block copolymer; performing esterification reaction on starch and octenyl succinic anhydride to obtain modified starch; the preparation method comprises the following steps: pyrolyzing corn straws to prepare biological carbon black, carrying out acid pickling activation, loading abamectin, and carrying out surface modification by using 3-mercaptopropyltrimethoxysilane to prepare surface-modified drug-loaded biological-based carbon black powder; and mixing the poly (butylene succinate)-itaconic acid segmented copolymer, modified starch, the surface modified drug-loaded bio-based carbon black powder and glycerol according to a ratio, performing twin-screw extrusion, promoting a click chemical reaction between double bonds and sulfydryl, performing granulation, and performing blow molding to obtain the black mulching film for rice cultivation. The prepared black mulching film for rice cultivation has biodegradability, excellent mechanical properties and a slow-release insecticidal function.

The application discloses a kind of landscape flowerpot production polyester degradable plastics and preparation method thereof, belong to degradable plastics production technical field, first, landscape flowerpot production polyester degradable plastics includes following mass parts raw materials: polylactic acid 50~70 parts, polybutylene succinate 20~35 parts, modified polyhydroxy fatty acid ester 10~15 parts, rare earth strontium aluminate coated cerium oxide core-shell powder 0.8~1.2 parts, antioxidant 0.3~0.8 parts, lubricant 0.5~1.0 parts.The application is improved by modification PHA (promote interface compatibilization and low temperature toughness) and core-shell powder (enhance anti-ultraviolet and degradation control), combined with PLA / PBS basic system, comprehensively solve the core defects of landscape flowerpot material. Example data confirms that its low-temperature impact strength is increased by more than 50%, yellowing rate is reduced by more than 80%, rigidity remains stable, degradation rate is controllable, has outstanding environmental protection and market value.

This disclosure provides formulations and processes that reduce the injection molding cycle times for poly(hydroxyalkanoate) blends which may contain a succinate polymer such as poly(butylene succinate), a filler such as lignocellulosic biomass and other additives. Blending of PHA with the second polymer may increase biodegradability and compostability.

The invention relates to the technical field of plastics, in particular to a high-strength antibacterial plastic packaging bottle and a preparation method thereof. The invention comprises the following steps: polylactic acid, polybutylene succinate, epoxy soybean oil and composite zinc oxide are mixed, extruded into granules and blow-molded to obtain a base member; tea polyphenols are carried on a carrier of mesoporous nano zinc oxide, which is then coated with carboxymethyl chitosan and grafted with an epoxy compound containing Si-O segments; a protective coating is prepared by using the composite zinc oxide and soybean oil-based self-healing waterborne polyurethane, and the protective coating is coated on the surface of the base member; a polyurethane prepolymer is prepared by using soybean oil-based polyol, polytetramethylene ether glycol and isophorone diisocyanate as raw materials, 2,2-bis(hydroxymethyl)propionic acid is used as a hydrophilic chain extender, the epoxy compound containing Si-O segments is used as a modifier, 1,4-butanediol and dithiodiethanol are used as end-capping agents, triethylamine is used as a neutralizing agent, and ethylenediamine and tetraethylenepentamine are used as amine cross-linking agents to prepare the soybean oil-based self-healing waterborne polyurethane.

The present invention relates to a wad (30) that is at least partially biodegradable for shot or bullet cartridges (10), made of a single piece of plastic. Said wad (30) comprises one or more polymers, including one or more polybutylene succinate polymers, and calcium carbonate. The mass fraction of said polymer(s) in said wad (30) is greater than or equal to 70%, the mass fraction of calcium carbonate in said wad (30) is greater than or equal to 6.5%, and the polybutylene succinate polymer(s) constitutes the majority by mass in said wad (30).

The present invention relates to novel carbodiimides, to a process for their production, and to the use of the novel carbodiimides in ester-based polyols, in polyethylene terephthalate (PET), in polybutylene terephthalate (PBT), in polytrimethylene terephthalate (PTT), in copolyesters, in thermoplastic polyester elastomers (TPE E), in ethylene vinyl acetate (EVA), in polylactic acid (PLA) and / or in PLA derivatives, in polybutylene adipate terephthalate (PBAT), in polybutylene succinate (PBS), in polyhydroxyalkanoates (PHA), in blends, in triglycerides, in thermoplastic polyurethanes, in polyurethane elastomers, in PU adhesives, in PU casting resins, for PU coatings or in PU foams as stabilizers.

The invention provides a flame-retardant sound-insulation sponge and a preparation method thereof, and relates to the technical field of sponges. The flame-retardant sound-insulation sponge comprises the following components in parts by weight: 50-70 parts of a poly (butylene succinate) matrix; 15 to 25 parts of a dynamic cross-linking agent; 20 to 30 parts of an autocatalytic flame retardant; 10 to 20 parts of an acoustic topology enhancement body; 3-8 parts of a sound wave scatterer; and 1-5 parts of a nucleating agent. Smoke-free flame retardance is achieved through the autocatalytic flame retardant, and the mechanical strength can be enhanced; the embedded acoustic grid constructs a micro-crack-Helmholtz dual energy consumption mechanism, so that the material blocks high-frequency noise and absorbs low-frequency vibration at the same time; the dynamic cross-linked network endows the material with thermal repair capability, and the material still keeps high rebound rate after being compressed for multiple times; the gradient foaming process controls macropores to surround the acoustic grid and micropores to fill the matrix at the supramolecular scale, so that full-band noise treatment is realized; all innovative elements are deeply adaptive to industrial production, the industrialization problem of new materials is solved, and perfect unification of high performance and low-cost manufacturing is achieved.

[Problem] To provide a denitrification filter material in which the form thereof is maintained without collapsing and which is digested only when fed on by denitrifying bacteria. [Solution] A denitrification filter material according to the present invention is configured from a biodegradable melt-kneaded resin composition containing (A) a water-insoluble and / or non-seawater-soluble biodegradable resin component and (B) a biomass polysaccharide polymer component. The component (A) is preferably an ester-bonded polymer, and is more preferably one or more selected from polybutylene succinate adipate, polyhydroxyalkanoate, and polycaprolactone. The component (B) preferably contains a biomass polysaccharide polymer component having a helical molecular structure. A water purification device comprises: a denitrification tank to which water being treated is supplied; the aforementioned denitrification filter material, which is accommodated in the denitrification tank and fixes aerobic denitrifying bacteria for reducing nitrate nitrogen in the water being treated; and an air supply mechanism that supplies air to the water being treated.

The utility model discloses a degradable amniotic fluid absorption pad which comprises an outer groove pad and an inner water absorption pad, the outer groove pad is a degradable waterproof groove pad, the inner water absorption pad is a degradable water absorption pad, a waterproof coating is arranged on the outer wall of the outer groove pad, the bottom of the inner water absorption pad is bonded to the groove bottom of the outer groove pad through a bonding layer, a plurality of water inlet grooves are formed in the inner water absorption pad, and the water inlet grooves are communicated with the water inlet grooves. Water absorption holes are formed in the side wall of the water inlet groove, the outer groove pad is made of poly (butylene succinate), the inner water absorption pad is made of polylactic acid non-woven fabric, poly (butylene succinate) and poly (butylene succinate) are both degradable materials, and the inner water absorption pad is torn off to be separated from the outer groove pad after use, so that the thickness can be reduced, and the degradation speed can be increased; during use, amniotic fluid of a pregnant woman is absorbed through the inner water absorption pad, meanwhile, the amniotic fluid is prevented from seeping out of the outer groove pad, the contact area of the inner water absorption pad and the amniotic fluid can be increased through the arrangement of the water inlet groove and the water absorption holes, and the effects of shunting, delaying flowing, accelerating amniotic fluid absorption and rapidly absorbing the amniotic fluid are achieved.

The invention relates to the technical field of biodegradable materials, in particular to a high-transparency ultralow-haze PBAT-based flexible film and a preparation method and application thereof, and the high-transparency ultralow-haze PBAT-based flexible film is composed of poly (butylene adipate-co-butylene terephthalate), poly (butylene succinate-co-butylene terephthalate), an antioxidant, an anti-hydrolysis agent, an anti-blocking agent and a dispersing agent in parts by weight. The polyethylene terephthalate-butylene adipate is used as a main component, the polyethylene terephthalate-butylene adipate can be added as required, and a small amount of other assistants are added to guarantee the performance of the film. According to the invention, PBAT and PBST are blended to improve the optical performance of the film, casting cooling inhibits the formation of a large crystal region, and the transparency is synergistically increased; the problems of low transparency and high haze of the PBAT-based film are solved, the use requirement of the packaging field on the film material is met, and the application of the PBAT material is further widened.

Compostable cold packs have a compostable film sealingly enclosing a fill material. The fill material includes a compostable or biodegradable sponge contributing 1% to 10% weight solids to the fill material, at least 90% by weight water, and a biocide, with the sponge in an expanded state as a result of absorption of the water and biocide. The compostable film comprises (1) a cellulose based film that includes a sealant film comprised of either a) polybutylene adipate terephthalate (PBAT), b) polybutylene succinate (PBS), c) un-oriented polylactic acid (PLA), d) biaxially oriented PLA (BOPLA), or (e) a cellulose wood pulp and starch blend; (2) a BOPLA based film that includes an inner sealant film comprised of either a) polybutylene adipate terephthalate (PBAT), b) polybutylene succinate (PBS), or c) un¬ oriented polylactic acid (PLA); or (3) a single film of heat sealable BOPLA. Methods of making the cold packs are also disclosed.

The present invention relates to the technical field of biodegradable materials, and specifically discloses a biodegradable material for adding BBM bamboo powder and its application in beer bottles. The raw materials of the above-mentioned biodegradable material for adding BBM bamboo powder include by mass: 10-20 parts of polybutylene succinate, 10-30 parts of polybutylene adipate terephthalate, 10-20 parts of bamboo powder, 1-3 parts of dopamine hydrochloride, 0.1-0.5 parts of n-butylamine, 1-2 parts of hexadecyltrimethylammonium bromide, 1-5 parts of tetraethyl orthosilicate, 1-2 parts of tetrabutyl titanate, 1-2 parts of 3-aminopropyltriethoxysilane, 1-2 parts of antioxidant, and 1-2 parts of plasticizer. The BBM obtained by the present invention has excellent mechanical properties, while improving the anti-ultraviolet strength of degradable materials to a certain extent, and has good biodegradability.

The present application belongs to the technical field of degradable polymer composite materials, and particularly relates to a heat-resistant degradable composite material and a preparation method thereof. In the method, epoxy silane grafted zirconium titanium phytate layered microsheets, lactic acid modified silicon boron calcium phosphate whiskers and light calcium carbonate are premixed with ethylene bis-stearamide and monoglyceride, and then mixed with polybutylene succinate, polylactic acid, polybutylene terephthalate adipate, an epoxy chain extender and an antioxidant, and then subjected to double-screw melt blending, cooling and granulation, drying, molding and heat treatment to obtain the heat-resistant degradable composite material. Through the synergistic effect of the epoxy silane grafted zirconium titanium phytate layered microsheets, the lactic acid modified silicon boron calcium phosphate whiskers and the degradable polyester matrix, the heat resistance, dimensional stability, mechanical strength and processing stability of the material are improved.

The application discloses a modified polylactic acid composite cable tie, which is made of a modified polylactic acid composite material, and raw materials of the modified polylactic acid composite material include, in percentage by weight, polylactic acid 15-50%, polybutylene succinate 15-50%, polybutylene adipate terephthalate 15-50%, and processing aids 5.1-15%. The processing aids include a release agent and a nucleating agent, the release agent includes pentaerythritol tristearate, and the nucleating agent is composed of an organic nucleating agent and an inorganic nucleating agent in a weight ratio of 2:1-10:1. The modified polylactic acid composite material can be used to prepare the cable tie by means of injection molding.

The application provides a preparation method of a biodegradable polybutylene succinate and polybutylene adipate block copolymer, in which succinic acid and adipic acid are respectively esterified and pre-polycondensed to prepare a prepolymer, the prepolymer is respectively polycondensed under high vacuum conditions, and then co-polycondensation is carried out. The method solves the problems of random distribution of polymer structure, many by-products, poor thermal performance, low molecular weight and the like in the prior art, the preparation method can make the polymer have a block structure, significantly reduce the generation of side reactions and the yield of by-products, improve the thermal performance and mechanical performance of the polymer, and a block polymer with excellent performance and high molecular weight is obtained.

The invention discloses a bio-based degradable wrapping film and a preparation method thereof in the field of green logistics and environment-friendly packaging. The wrapping film is prepared from polylactic acid, poly (butylene succinate), triethyl citrate, an antioxidant, calcium stearate and two novel inorganic modified compounds. Wherein the zirconium phosphate-sodium carboxymethyl cellulose intercalation compound constructs an organic-inorganic hybrid structure through alkaline intercalation, so that the dispersity and interfacial compatibility of the filler are effectively improved; the lanthanum titanate-zinc oxide core-shell nano hybrid is prepared by combining a solvothermal method with a urea precipitation process, has regular core-shell morphology, can synergistically enhance mechanical properties, regulate and control degradation rate, and endows antibacterial and ultraviolet shielding functions. The wrapping film prepared by melt blending and film blowing processes has high tensile strength, excellent ductility, good transparency and controllable compost degradability.

The invention relates to a method for producing polybutylene succinate (PBS), the raw materials of which comprise: a) a first starting component: dimethyl succinate (DMS) in monomeric form, and b) a second starting component: 1, 4-butanediol (BDO) in monomeric form.