NDLI: The simultaneous introduction of low and high molecular weight of biodegradable Poly(diethylene glycol adipate)s to Plasticize and Toughen Polylactide

Content Provider	Springer Nature Link
Author	Hao, Yanping Yang, Huili Zhang, Huiliang Gao, Ge Dong, Lisong
Copyright Year	2015
Abstract	Plasticization and toughness of polylactide (PLA) are of interesting due to its poor machinability and brittleness. Here, low and high macromolecular weight of Poly(diethylene glycol adipate)s (L-PDEGA and H-PDEGA) were used to plasticize and toughen PLA simultaneously. The results showed that the mechanical properties of PLA remained almost unchanged when only 5 wt% L-PDEGA was added. However, H-PDEGA were effective in lowering the glass transition temperatures as well as in increasing the elongation at break and the impact strength. Compared with neat PLA, the crystallinity of PLA increased with increasing H-PDEGA content. When 20 wt% H-PDEGA was added, the impact strength and the elongation at break increased from 3.1 kJ/m$^{2}$ and 5.6 % of neat PLA to 68.3 kJ/m$^{2}$ to 272.4 %, respectively. Additionally, morphological study revealed that the fracture behavior of PLA had been changed from brittle to ductile after H-PDEGA incorporated. The results of rheological analysis showed that the storage modulus and complex viscosity in the melt state of the blends were decreased compared with that of neat PLA.
Starting Page	2519
Ending Page	2528
Page Count	10
File Format	PDF
ISSN	12299197
Journal	Fibers and Polymers
Volume Number	16
Issue Number	12
e-ISSN	18750052
Language	English
Publisher	The Korean Fiber Society
Publisher Date	2016-02-05
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polylactide Poly(diethylene glycol adipate) Plasticize Toughness Crystalline Polymer Sciences
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering Polymers and Plastics

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