A kind of biodegradable alternating aliphatic polyester amide and its preparation method

A polyester amide, aliphatic technology, applied in the field of polymer materials, can solve problems such as high structure, achieve broad application prospects, good biodegradability, and fewer by-products.
CN111349233BActive Publication Date: 2021-10-26DONGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DONGHUA UNIV
Publication Date
2021-10-26

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Abstract

The invention relates to a biodegradable alternating aliphatic polyester amide and a preparation method thereof. The preparation method is as follows: under the action of a catalyst and a phosphorus-containing cocatalyst, linear oxamide diol and a linear aliphatic diacid are prepared The polycondensation reaction produces a biodegradable alternating aliphatic polyester amide, wherein the phosphorus-containing cocatalyst is an ammonium salt containing hydrogen phosphate, a calcium salt containing hydrogen phosphate, a sodium salt containing hydrogen phosphate or a magnesium salt containing hydrogen phosphate; The main chain of the finally obtained biodegradable alternating aliphatic polyester amide is formed by alternating bonding of straight-chain oxamide diol units and straight-chain aliphatic diacid units, and the biodegradable alternating aliphatic polyester amide The weight average molecular weight is 50,000 to 1,000,000 g / mol. The preparation method of the present invention is simple to operate, pollution-free, and has few by-products. The finally obtained biodegradable alternating aliphatic polyester amide has good biodegradability, and the alternating structure is regular, the molecular weight is high, and the thermal and mechanical properties are excellent. good.
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Description

technical field

[0001] The invention belongs to the technical field of polymer materials, and relates to a biodegradable alternating aliphatic polyester amide and a preparation method thereof, in particular to a biodegradable alternating aliphatic polyester amide with high mechanical strength, good toughness and biodegradability. its preparation method. Background technique

[0002] With the public's increasing concern about environmental issues, more and more researchers have focused their attention on the development of new biodegradable polymers. Polybutylene succinate (PBS), polyhydroxybutyrate-hydroxyvalerate (PHBV) and polylactic acid (PLA) are currently the most typical biodegradable polymers and have been industrialized. They are used in daily plastic products, Some applications have been found in packaging materials and medical products. However, aliphatic polyesters generally have problems such as strong hydrophobicity, poor heat resistance, low mechanical proper...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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