Stereocomplex formation between enantiomeric poly(lactic acid)s. 4. Differential scanning calorimetric studies on precipitates from mixed solutions of poly(D-lactic acid) and poly(L-lactic acid)

1991 ◽  
Vol 24 (20) ◽  
pp. 5657-5662 ◽  
Author(s):  
Hideto Tsuji ◽  
Suong Hyu Hyon ◽  
Yoshito Ikada
Keyword(s):  
Lactic Acid ◽  
Poly Lactic Acid ◽  
Differential Scanning Calorimetric ◽  
Mixed Solutions ◽  
Stereocomplex Formation ◽  
Calorimetric Studies

Stereocomplex Formation by Enantiomeric Poly(lactic acid) Graft-Type Phospholipid Polymers for Tissue Engineering

2002 ◽  
Vol 3 (5) ◽  
pp. 1109-1114 ◽  
Author(s):  
Junji Watanabe ◽  
Takahisa Eriguchi ◽  
Kazuhiko Ishihara
Keyword(s):  
Tissue Engineering ◽  
Lactic Acid ◽  
Poly Lactic Acid ◽  
Stereocomplex Formation

scholarly journals Super-Toughened Poly(lactic Acid) with Poly(ε-caprolactone) and Ethylene-Methyl Acrylate-Glycidyl Methacrylate by Reactive Melt Blending

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 771 ◽  
Author(s):  
Ao-Lin Hou ◽  
Jin-Ping Qu
Keyword(s):  
Lactic Acid ◽  
Methyl Acrylate ◽  
Glycidyl Methacrylate ◽  
Phase Morphology ◽  
Poly Lactic Acid ◽  
Ternary Blend ◽  
Differential Scanning Calorimetric ◽  
Melt Blending ◽  
Reactive Melt ◽  
Ethylene Methyl Acrylate

In recent years, poly(lactic acid) (PLA) has attracted more and more attention as one of the most promising biobased and biodegradable polymers. However, the inherent brittleness significantly limits its wide application. Here, ternary blends of PLA, poly(ε-caprolactone) (PCL) with various amounts of ethylene-methyl acrylate-glycidyl methacrylate (EMA-GMA) terpolymer were fabricated through reactive melt blending in order to improve the toughness of PLA. The effect of different addition amounts of EMA-GMA on the mechanical properties, interfacial compatibility and phase morphology of PLA/PCL blends were studied. The reactions between the epoxy groups of EMA-GMA and carboxyl and hydroxyl end groups of PLA and PCL were investigated thorough a Fourier transform infrared (FT-IR). The miscibility and thermal behavior of the blends were studied through a dynamic mechanical analysis (DMA), differential scanning calorimetric (DSC) and X-ray diffraction (XRD). The phase morphology and impact fracture surface of the blends were also investigated through a scanning electron microscope (SEM). With the addition of 8 phr EMA-GMA, a PLA/PCL (90 wt %:10 wt %)/EMA-GMA ternary blend presenting a suitable multiple stacked phase structure with an optimum interfacial adhesion exhibited an elongation at break of 500.94% and a notched impact strength of 64.31 kJ/m2 with a partial break impact behavior. Finally, the toughening mechanism of the supertough PLA based polymers have been established based on the above analysis.

Poly(lactic acid) stereocomplex formation: Application to PLA rheological property modification

2014 ◽  
Vol 131 (22) ◽  
pp. n/a-n/a ◽  
Author(s):  
Sajjad Saeidlou ◽  
Michel A. Huneault ◽  
Hongbo Li ◽  
Chul B. Park
Keyword(s):  
Lactic Acid ◽  
Rheological Property ◽  
Poly Lactic Acid ◽  
Stereocomplex Formation ◽  
Property Modification

Stereocomplex formation between enantiomeric poly(lactic acid)s. 2. Stereocomplex formation in concentrated solutions

1991 ◽  
Vol 24 (10) ◽  
pp. 2719-2724 ◽  
Author(s):  
Hideto Tsuji ◽  
Fumitaka Horii ◽  
Suong Hyu Hyon ◽  
Yoshito Ikada
Keyword(s):  
Lactic Acid ◽  
Poly Lactic Acid ◽  
Concentrated Solutions ◽  
Stereocomplex Formation
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