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Degradable resin composition and preparation method thereof

A technology for degrading resins and compositions, applied in the field of degradable resin compositions, can solve the problems of poor compatibilization effect of epoxy compatibilizers and little improvement in performance, and achieve the effects of easy operation and simple process

Inactive Publication Date: 2012-07-25
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the PLA / PBAT blend system, it has been reported in the literature that epoxy compatibilizers are used for compatibilization. Industry, 2009, 3: 75-77), however, the processing temperature of PLA / PBAT blends is generally 175 ° C, and the compatibilizing effect of epoxy compatibilizers is not good at this temperature, and its performance is not improved much

Method used

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  • Degradable resin composition and preparation method thereof
  • Degradable resin composition and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0023] Polylactic acid (produced by Natural Works, grade 2002D), terephthalic acid-adipic acid-1,4-butanediol terpolymer copolyester (produced by Zhejiang Hangzhou Xinfu Pharmaceutical Co., Ltd., Biocosafe resin), 2,2′- Bis-(2-oxazoline) (Wuhan Yuancheng Gongchuang Technology Co., Ltd.) and phthalic anhydride (Shanghai Fude Chemical Co., Ltd.) are mixed ingredients. The specific composition is: 80 parts of polylactic acid, terephthalic acid - 20 parts of adipic acid-1,4-butanediol terpolymer copolyester, 1 part of 2,2'-bis-(2-oxazoline), 0.5 part of phthalic anhydride. The CTE35 twin-screw extruder of Coperion Keyer Nanjing Machinery Co., Ltd. was used for blending and granulation. The temperatures of each section of the extruder were: 160°C, 170°C, 175°C, 175°C, 175°C and 170°C (head temperature). The pellets were made into standard specimens by injection, and the tensile properties were tested. The results are shown in Table 1.

Embodiment 2

[0025] Except that 1 part of phthalic anhydride in embodiment 1, all the other conditions are identical with embodiment 1. The pellets obtained by melt blending were made into standard specimens by injection, and the tensile properties were tested. The results are listed in Table 1.

Embodiment 3

[0027] Except with 2 parts of phthalic anhydride in embodiment 1, all the other conditions are identical with embodiment 1. The pellets obtained by melt blending were made into standard specimens by injection, and the tensile properties were tested. The results are listed in Table 1.

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Abstract

Disclosed are degradable resin composition and a preparation method thereof. The degradable resin composition can be obtained by melting and mixing polylactic acid (PLA), terephthalic acid-adipic acid-1,4-poly butylene adipate (PBAT), dioxins-like compounds and anhydride-like compounds according a certain proportion. The degradable resin composition prepared has excellent flexibility, high strength, degradability, fine product stability and can be used for fibers and package materials. The degradable resin composition is simple in preparation process and easy to produce.

Description

technical field [0001] The invention relates to a degradable resin composition containing polylactic acid (component A) and terephthalic acid-adipic acid-1,4-butanediol terpolymer (component B) and a preparation method thereof . Background technique [0002] Polylactic acid (PLA) is a polymer material with excellent biocompatibility and biodegradability. It can be completely decomposed into water and carbon dioxide under the action of microorganisms in nature, and will not pollute the environment. PLA is a thermoplastic polymer that can be processed by common methods, such as extrusion, molding, casting, melt spinning, solution spinning, blow molding, etc., and is widely used in medical and health care, clothing, home decoration, industry, etc. field. However, polylactic acid has poor toughness, lack of elasticity and flexibility, and these shortcomings limit its application. [0003] Terephthalic acid-adipic acid-1,4-butanediol ternary copolyester (PBAT) also belongs to ...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L67/02C08K5/353C08K5/1539
Inventor 东为富陈明清邹本书倪忠斌
Owner JIANGNAN UNIV