scholarly journals The application of the synergistic effect between the crystal structure of poly(lactic acid) (PLA) and the presence of ethylene vinyl acetate copolymer (EVA) to produce highly ductile PLA/EVA blends

2019 ◽  
Vol 138 (2) ◽  
pp. 1287-1297 ◽  
Author(s):  
Tamás Tábi
Keyword(s):  
Crystal Structure ◽  
Lactic Acid ◽  
Synergistic Effect ◽  
Vinyl Acetate ◽  
Ethylene Vinyl Acetate ◽  
Poly Lactic Acid ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer

Poly(lactic acid)/ethylene vinyl acetate copolymer blend composites with wood flour and wollastonite: Physical properties, morphology, and biodegradability

2019 ◽  
Vol 25 (4) ◽  
pp. 313-327 ◽  
Author(s):  
Phasawat Chaiwutthinan ◽  
Saowaroj Chauyjuljit ◽  
Nutthawut Thipkham ◽  
Chatr Panithipongwut Kowalski ◽  
Anyaporn Boonmahitthisud
Keyword(s):  
Lactic Acid ◽  
Physical Properties ◽  
Vinyl Acetate ◽  
Wood Flour ◽  
Ethylene Vinyl Acetate ◽  
Poly Lactic Acid ◽  
Copolymer Blend ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer

scholarly journals Enhanced Flame Retardancy in Ethylene–Vinyl Acetate Copolymer/Magnesium Hydroxide/Polycarbosilane Blends

Polymers ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 36
Author(s):  
Tiefeng Zhang ◽  
Chunfeng Wang ◽  
Yongliang Wang ◽  
Lijun Qian ◽  
Zhidong Han
Keyword(s):  
Synergistic Effect ◽  
Flame Retardant ◽  
Vinyl Acetate ◽  
Magnesium Hydroxide ◽  
Ethylene Vinyl Acetate ◽  
Infrared Spectrometry ◽  
Limiting Oxygen Index ◽  
Blending Method ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer

A polymer ceramic precursor material—polycarbosilane (PCS)—was used as a synergistic additive with magnesium hydroxide (MH) in flame-retardant ethylene–vinyl acetate copolymer (EVA) composites via the melt-blending method. The flame-retardant properties of EVA/MH/PCS were evaluated by the limiting oxygen index (LOI) and a cone calorimeter (CONE). The results revealed a dramatic synergistic effect between PCS and MH, showing a 114% increase in the LOI value and a 46% decrease in the peak heat release rate (pHRR) with the addition of 2 wt.% PCS to the EVA/MH composite. Further study of the residual char by scanning electron microscopy (SEM) proved that a cohesive and compact char formed due to the ceramization of PCS and close packing of spherical magnesium oxide particles. Thermogravimetric analysis coupled with Fourier-transform infrared spectrometry (TG–FTIR) and pyrolysis–gas chromatography coupled with mass spectrometry (Py–GC/MS) were applied to investigate the flame-retardant mechanism of EVA/MH/PCS. The synergistic effect between PCS and MH exerted an impact on the thermal degradation products of EVA/MH/PCS, and acetic products were inhibited in the gas phase.

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