Role of mixing parameters in the preparation of poly(ethylene vinyl acetate) nanocomposites by melt blending

2006 ◽  
Vol 100 (4) ◽  
pp. 2652-2658 ◽  
Author(s):  
Mangala Tillekeratne ◽  
Margaret Jollands ◽  
Ferenc Cser ◽  
Sati N. Bhattacharya
Keyword(s):  
Vinyl Acetate ◽  
Ethylene Vinyl Acetate ◽  
Melt Blending ◽  
Mixing Parameters ◽  
Poly Ethylene

Role of montmorillonite in flame retardancy of ethylene–vinyl acetate copolymer

2006 ◽  
Vol 91 (3) ◽  
pp. 593-599 ◽  
Author(s):  
Andrea Szép ◽  
András Szabó ◽  
Nikoletta Tóth ◽  
Péter Anna ◽  
György Marosi
Keyword(s):  
Vinyl Acetate ◽  
Flame Retardancy ◽  
Ethylene Vinyl Acetate ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer

Tunable shape memory behaviors of poly(ethylene vinyl acetate) achieved by adding poly(L-lactide)

2015 ◽  
Vol 24 (12) ◽  
pp. 125002 ◽  
Author(s):  
Zhi-xing Zhang ◽  
Fei Liao ◽  
Zhen-zhen He ◽  
Jing-hui Yang ◽  
Ting Huang ◽  
...  
Keyword(s):  
Shape Memory ◽  
Vinyl Acetate ◽  
Ethylene Vinyl Acetate ◽  
Poly Ethylene

scholarly journals Acoustic Behavior of Subfloor Lightweight Mortars Containing Micronized Poly (Ethylene Vinyl Acetate) (EVA)

Materials ◽  
2016 ◽  
Vol 9 (1) ◽  
pp. 51 ◽  
Author(s):  
Luiza Brancher ◽  
Maria Nunes ◽  
Ana Grisa ◽  
Daniel Pagnussat ◽  
Mára Zeni
Keyword(s):  
Vinyl Acetate ◽  
Ethylene Vinyl Acetate ◽  
Acoustic Behavior ◽  
Poly Ethylene

scholarly journals Fabrication, Characterization, and Properties of Poly (Ethylene-Co-Vinyl Acetate) Composite Thin Films Doped with Piezoelectric Nanofillers

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1182 ◽  
Author(s):  
Giulia Mariotti ◽  
Lorenzo Vannozzi
Keyword(s):  
Thin Films ◽  
Vinyl Acetate ◽  
Polymer Concentration ◽  
Chemical Properties ◽  
Ethylene Vinyl Acetate ◽  
Mechanical Stimuli ◽  
Mechanical Reinforcement ◽  
Crystallinity Degree ◽  
Tunable Materials ◽  
Poly Ethylene

Ethylene vinyl acetate (EVA) is a copolymer comprehending the semi-crystalline polyethylene and amorphous vinyl acetate phases, which potentially allow the fabrication of tunable materials. This paper aims at describing the fabrication and characterization of nanocomposite thin films made of polyethylene vinyl acetate, at different polymer concentration and vinyl acetate content, doped with piezoelectric nanomaterials, namely zinc oxide and barium titanate. These membranes are prepared by solvent casting, achieving a thickness in the order of 100–200 µm. The nanocomposites are characterized in terms of morphological, mechanical, and chemical properties. Analysis of the nanocomposites shows the nanofillers to be homogeneously dispersed in EVA matrix at different vinyl acetate content. Their influence is also noted in the mechanical behavior of thin films, which elastic modulus ranged from about 2 to 25 MPa, while keeping an elongation break from 600% to 1500% and tensile strength from 2 up to 13 MPa. At the same time, doped nanocomposite materials increase their crystallinity degree than the bare ones. The radiopacity provided by the addition of the dopant agents is proven. Finally, the direct piezoelectricity of nanocomposites membranes is demonstrated, showing higher voltage outputs (up to 2.5 V) for stiffer doped matrices. These results show the potentialities provided by the addition of piezoelectric nanomaterials towards mechanical reinforcement of EVA-based matrices while introducing radiopaque properties and responsiveness to mechanical stimuli.

Online determination of chemical and physical properties of poly(ethylene vinyl acetate) pellets using a novel method of near-infrared spectroscopy combined with angle transformation

2019 ◽  
Vol 11 (18) ◽  
pp. 2435-2442 ◽  
Author(s):  
Jinchun Xie ◽  
Hongfu Yuan ◽  
Chunfeng Song ◽  
Xiangjun Yan ◽  
Hao Yan ◽  
...  
Keyword(s):  
Quality Control ◽  
Infrared Spectroscopy ◽  
Vinyl Acetate ◽  
Near Infrared ◽  
Ethylene Vinyl Acetate ◽  
Melt Flow Rate ◽  
Production Processes ◽  
Novel Method ◽  
Poly Ethylene

Melt flow rate (MFR) and vinyl acetate content (VAC) are the target parameters for quality control of poly(ethylene vinyl acetate) (EVA) pellets in production processes.

Effects of structure and processing on the surface roughness of extruded co-continuous poly(ethylene) oxide/ethylene-vinyl acetate blends

2020 ◽  
Vol 40 (9) ◽  
pp. 763-770 ◽  
Author(s):  
Molin Guo ◽  
Hao Chen ◽  
João M. Maia
Keyword(s):  
Surface Roughness ◽  
Ethylene Oxide ◽  
Vinyl Acetate ◽  
Stress Transfer ◽  
Ethylene Vinyl Acetate ◽  
Processing Temperature ◽  
Processing Conditions ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Different Molecular Weight

AbstractSurface roughness and sharkskin of extruded polymers, including blends are affected by the morphology and processing conditions. In this study, different effects on the roughness of the polymer blend extrudates were investigated. Co-continuous poly(ethylene) oxide/ethylene-vinyl acetate (PEO/EVA) blends with three different molecular weight (Mw) PEOs were compounded successfully. It was found that the better co-continuity of the structure and smoother surface were achieved for lower Mw PEO/EVA blend because of more effective stress transfer in the PEO phase. The effect of processing temperature was also studied with decreasing processing temperature reducing the surface roughness of the high Mw PEO/EVA blend, which was also achieved as a result of improved co-continuous morphology by adjusting the viscosity and elasticity ratio with shifting temperatures.

Sign in / Sign up

Export Citation Format

Share Document