Biodegradable copolymer and preparation method thereof

A technology of biodegradation and copolymer, applied in the preparation of the copolymer, in the field of polybutylene succinate-polylactic acid copolymer, can solve the problems of poor processing stability, limited wide application, poor impact resistance, etc. The effect of improving toughness, reducing cost and good physical and mechanical properties
CN102020773AInactive Publication Date: 2011-04-20NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
0 Cites 10 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
Publication Date
2011-04-20
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a biodegradable copolymer of PLA-co-PBS (Poly Lactic Acid-co-Poly Butylenes Succinate) and a preparation method thereof. The copolymer is a binary copolymer prepared through a melt polycondensation reaction of a low PBS polymer and a low PLA polymer under a catalytic system and a stabilized system. Measured by GPC (Gel Permeation Chromatography), the copolymer has the weight-average molecular weight ranging from 4.25*104 g / mol to 7.34*104 g / mol and the molecular weight distribution MW / MN ranging from 1.47 to 1.84 as well favorable physical and mechanical performance, is completely degradable and is widely applied to sheets, membranes, and the like.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a biodegradable copolymer, especially a polybutylene succinate-polylactic acid copolymer (PBS-co-PLA), and also relates to a preparation method of the copolymer. Background technique

[0002] In recent years, due to the environmental pollution caused by plastic waste, the sustainability of human production activities and the reduction of carbon dioxide emissions have attracted much attention, and research on environmental protection, resource and energy conservation, and resource regeneration has intensified. From the perspective of resources and energy, it is urgent for us to switch from limited fossil resources to renewable biological resources as soon as possible, so as to get rid of the extreme dependence on oil as soon as possible. Therefore, countries around the world are making great efforts to research and develop biological resources and bio-energy, and develop and utilize various biological resource products. Biodegra...

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
Login to View More