scholarly journals Optimising Ductility of Poly(Lactic Acid)/Poly(Butylene Adipate-co-Terephthalate) Blends Through Co-continuous Phase Morphology

2018 ◽  
Vol 26 (9) ◽  
pp. 3802-3816 ◽  
Author(s):  
Yixin Deng ◽  
Changyi Yu ◽  
Peangpatu Wongwiwattana ◽  
Noreen L. Thomas
Keyword(s):  
Lactic Acid ◽  
Continuous Phase ◽  
Phase Morphology ◽  
Poly Lactic Acid

Study on the effect of dispersion phase morphology on porous structure of poly (lactic acid)/poly (ethylene terephthalate glycol-modified) blending foams

Polymer ◽  
2013 ◽  
Vol 54 (21) ◽  
pp. 5839-5851 ◽  
Author(s):  
Xiangdong Wang ◽  
Wei Liu ◽  
Hongfu Zhou ◽  
Bengang Liu ◽  
Hangquan Li ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Porous Structure ◽  
Ethylene Terephthalate ◽  
Phase Morphology ◽  
Poly Lactic Acid ◽  
Dispersion Phase ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene

A Change of Phase Morphology in Poly Lactic Acid/Poly Methyl Methacrylate Blends Induced by Graphene Nano Sheets

2015 ◽  
Vol 54 (12) ◽  
pp. 1466-1478 ◽  
Author(s):  
Azin Paydayesh ◽  
Ahmad Aref Azar ◽  
Azam Jalali Arani
Keyword(s):  
Lactic Acid ◽  
Methyl Methacrylate ◽  
Phase Morphology ◽  
Poly Lactic Acid ◽  
Poly Methyl Methacrylate

Morphology, Mechanical and Thermal Properties of Poly(Lactic Acid)/Propylene-Ethylene Copolymer/Cellulose Composites

2019 ◽  
Vol 972 ◽  
pp. 172-177
Author(s):  
Sirirat Wacharawichanant ◽  
Patteera Opasakornwong ◽  
Ratchadakorn Poohoi ◽  
Manop Phankokkruad
Keyword(s):  
Thermal Stability ◽  
Lactic Acid ◽  
Thermal Properties ◽  
Tensile Stress ◽  
Cellulose Fibers ◽  
Phase Morphology ◽  
Poly Lactic Acid ◽  
Mechanical And Thermal Properties ◽  
Ethylene Copolymer ◽  
Thermal Stability Of

This work studied the effects of various types of cellulose fibers on the morphology, mechanical and thermal properties of poly(lactic acid) (PLA)/propylene-ethylene copolymer (PEC) (90/10 w/w) blends. The PLA/PEC blends before and after adding cellulose fibers were prepared by melt blending method in the internal mixer and molded by compression method. The morphological analysis observed that the presence of cellulose in PLA did not change the phase morphology of PLA, and PLA/cellulose composite surfaces were observed the cellulose fibers inserted in PLA matrix and fiber pull-out. The phase morphology of PLA/PEC blends was changed from brittle fracture to ductile fracture behavior and showed the phase separation between PLA and PEC phases. The presence of celluloses did not improve the compatibility between PLA and PEC phases. The tensile stress and strain curves found that the tensile stress of PLA was the highest value. The addition of all celluloses increased Young’s modulus of PLA. The PEC presence increased the tensile strain of PLA over two times when compared with neat PLA and PLA was toughened by PEC. The incorporation of cellulose fibers in PLA/PEC blends could improve Young’s modulus, tensile strength, and stress at break of the blends. The thermal stability showed that the degradation temperatures of all types of cellulose were less than the degradation temperatures of PLA. Thus, the incorporation of cellulose in PLA could not enhance the thermal stability of PLA composites and PLA/PEC composites. The degradation temperature of PEC was the highest value, but it could not improve the thermal stability of PLA. The incorporation of cellulose fibers had no effect on the melting temperature of the PLA blend and composites.

Super‐Toughened Heat‐Resistant Poly(lactic acid) Alloys By Tailoring the Phase Morphology and the Crystallization Behaviors

2020 ◽  
Vol 58 (3) ◽  
pp. 500-509 ◽  
Author(s):  
Baogou Wu ◽  
Pengwu Xu ◽  
Weijun Yang ◽  
Martin Hoch ◽  
Weifu Dong ◽  
...  
Keyword(s):  
Lactic Acid ◽  
Phase Morphology ◽  
Poly Lactic Acid ◽  
Crystallization Behaviors ◽  
Heat Resistant

scholarly journals Mechanical Properties and Phase Morphology of Poly(Lactic Acid)/Polyamide 12

2011 ◽  
Vol 60 (1) ◽  
pp. 8-13
Author(s):  
Katsuhisa TOKUMITSU ◽  
Takahiro INOUE ◽  
Yoshihiro YAMASHITA ◽  
Kenji KIKUCHI ◽  
Takeshi KANZAWA
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Phase Morphology ◽  
Poly Lactic Acid ◽  
Polyamide 12

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.

Effect of compounding procedure on mechanical properties and dispersed phase morphology of poly(lactic acid)/polycaprolactone blends containing peroxide

2006 ◽  
Vol 103 (2) ◽  
pp. 1066-1074 ◽  
Author(s):  
Takeshi Semba ◽  
Kazuo Kitagawa ◽  
Umaru S. Ishiaku ◽  
Masaya Kotaki ◽  
Hiroyuki Hamada
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Phase Morphology ◽  
Poly Lactic Acid ◽  
Dispersed Phase
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