Novel dendroid macromolecule and preparation method thereof

A dendritic polymer technology, which is applied in the field of new dendritic polymers and their preparation, can solve the problems of dendritic polymer application limitations and achieve low crystallinity, high melt fluidity, and easy processing and molding

Inactive Publication Date: 2007-10-31
SHANTOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, dendrimers are all based on small molecular compounds. So far, no dendrimers based on polymer compounds have appeared, which limits the application of dendrimers to a certain extent.

Method used

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  • Novel dendroid macromolecule and preparation method thereof
  • Novel dendroid macromolecule and preparation method thereof
  • Novel dendroid macromolecule and preparation method thereof

Examples

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Embodiment Construction

[0052] The synthesis of embodiment 1 dendritic PHBHHx material

[0053] 100mL in a dry belt with stirring and keep N 2 In the double-necked bottle of atmosphere, add 8.0g PHBHHx (M w =1.2×10 6 ,M n =7×10 5 , HHx%=12%, Guangdong Lianyi Bioengineering Company), and 0.5g malic acid. Vacuum dry at 60°C for 2h, heat to 160°C until it is completely melted, add about 0.3mL of catalyst diisooctoate stannous, keep this temperature for 1h, and continue heating under vacuum for 3h to obtain a light brown melt. in N 2 Cool to room temperature under atmosphere, add 30 mL of chloroform to dissolve the polymer, and precipitate in 300 mL of methanol to obtain 5.0 g of a white product. The crystallinity of the material is about 10%, and the glass transition temperature T g =1°C, melting point T m =172°C, weight molecular weight M w =320000, average molecular weight M n =80000. NMR (500MHz, CDCl 3 ): δppm0.9 (CH 3 ), 1.4 (CH 2 ), 1.6 (CCH 2 ), 2.5-2.6 (CO-CH 2 ), 5.2-5.3 (COO-CH...

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Abstract

The invention discloses a dendroid macromolecule material with poly hydroxy fatty acid ether, polylactic acid, lactic acid-glycolic acid copolymer, poly (epsilon-caprolactone), aromatic polyester, polyamide, polyurethane, polycarbonate and so on macromolecular material as base material, which is characterized by the following: proceeding esterification or ester exchange with base material and compound generated branched; getting the dendroid macromolecule material; combining property of dendroid macromolecule and biodegradable macromolecule; controlling chemical constitution, structure and molecular shape to needs; possessing special chemical constitution and physical property; modifying poly hydroxy fatty acid ether, polylactic acid, lactic acid-glycolic acid copolymer, poly (epsilon-caprolactone), aromatic polyester, polyamide, polyurethane, polycarbonate and so on macromolecular material as additive; becoming compatible agent of multiple diverse structure macromolecule material.

Description

technical field [0001] The invention relates to a novel dendritic macromolecule with macromolecule material as base material and a preparation method thereof. Background technique [0002] Dendritic polymers (now also called hyperbranched polymers) are new polymer materials invented in the 1980s and extensively studied in the 1990s. Dendrimers consist of a central core, inner repeating units and outer end groups. Due to its unique structure, this polymer has the characteristics of good fluidity, high group density and strong reactivity, and has broad application potential in many fields. Dendrimers in the prior art are all based on small molecular compounds, and so far no dendrimers based on polymer compounds have appeared, which limits the application of dendrimers to a certain extent. [0003] Aliphatic polyester is one of the most important biodegradable and biocompatible materials, widely used in agriculture, coatings, medicine (controlled release of drugs, medical imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/91C08G63/02C08G18/83C08G69/48C08J3/24
Inventor 许开天陈国强许松玲李子彪罗容聪倪成阳
Owner SHANTOU UNIV
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