Effect of Plasticizer on the Morphology and Foaming Properties of Poly(vinyl alcohol) Foams by Supercritical CO2 Foaming Agents

2019 ◽  
Vol 27 (12) ◽  
pp. 2878-2885 ◽  
Author(s):  
Duoyuan Yin ◽  
Aimin Xiang ◽  
Yan Li ◽  
Haisong Qi ◽  
Huafeng Tian ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Supercritical Co2 ◽  
Poly Vinyl Alcohol ◽  
Foaming Properties ◽  
Foaming Agents

Formation of poly-vinyl-alcohol structures by supercritical CO2

2007 ◽  
Vol 104 (5) ◽  
pp. 3151-3160 ◽  
Author(s):  
E. Reverchon ◽  
S. Cardea ◽  
C. Rapuano
Keyword(s):  
Vinyl Alcohol ◽  
Supercritical Co2 ◽  
Poly Vinyl Alcohol

scholarly journals Moisture sorption characteristics of extrusion-cooked starch protective loose-fill cushioning foams

2017 ◽  
Vol 31 (4) ◽  
pp. 457-463
Author(s):  
Maciej Combrzyński ◽  
Leszek Mościcki ◽  
Anita Kwaśniewska ◽  
Tomasz Oniszczuk ◽  
Agnieszka Wójtowicz ◽  
...  
Keyword(s):  
Water Vapour ◽  
Vinyl Alcohol ◽  
Potato Starch ◽  
Thermoplastic Starch ◽  
Poly Vinyl Alcohol ◽  
Model Parameters ◽  
Extrusion Cooking ◽  
Foaming Agents ◽  
Vapour Adsorption ◽  
Water Vapour Adsorption

Abstract The aim of this work was to determine the water vapour sorption properties of thermoplastic starch filling foams processed by extrusion-cooking technique from various combinations of potato starch and two foaming agents: poly(vinyl) alcohol and Plastronfoam, in amount of 1, 2 and 3% each. Foams were processed with the single screw extruder-cooker at two different screw rotational speeds 100 and 130 r.p.m. The sorption isotherms of samples were determined and described using the Guggenheim-Anderson-de Boer model. Also, the kinetics of water vapour adsorption by foams, as a function of time, was measured and fitted with Peleg model. On the basis of the analysis the influence of the applied foaming agents, as well as the technological parameters of extrusion-cooking process in relation to water vapour adsorption by thermoplastic starch foams was demonstrated. There was no difference between the shapes of the isotherms for poly(vinyl) alcohol foams while for Plastronfoam foams a notable difference among foams extruded at 100 r.p.m. was observed in the regions of low and high humidity content. The analysis of the Guggenheim-Anderson-de Boer model parameters showed that the water molecules were less strongly bound with the foam surface when extruded at a lower screw speed.

Structure of junction zones in poly (vinyl alcohol) gels by rheological and thermal studies

1996 ◽  
Vol 93 ◽  
pp. 880-886 ◽  
Author(s):  
K Nishinari ◽  
M Watase ◽  
F Tanaka
Keyword(s):  
Vinyl Alcohol ◽  
Thermal Studies ◽  
Poly Vinyl Alcohol

Functional surfaces produced by foam coating

TAPPI Journal ◽  
2016 ◽  
Vol 15 (8) ◽  
pp. 515-521 ◽  
Author(s):  
EIJA KENTTÄ ◽  
HANNA KOSKELA ◽  
SARA PAUNONEN ◽  
KARITA KINNUNEN-RAUDASKOSKI ◽  
TUOMO HJELT
Keyword(s):  
Life Time ◽  
Silica Coating ◽  
Foaming Properties ◽  
Coated Paper ◽  
Paper Properties ◽  
Foaming Agent ◽  
Foaming Agents ◽  
Size Stability ◽  
Stability Measurement ◽  
Standard Paper

This paper reports experiments on silica coating formulations that are suitable for application as a thin pigment layer with foam coating technique on a paper web. To understand the foaming properties of nanosilica dispersions, the critical micelle concentration, foam half-life time, and foam bubble size stability were determined with three different foaming agents. The results indicate that the bubble stability measurement is a useful characterization method for foam coating purposes. Pilot foam coating trials were done and the effects of the chosen foaming agents were studied on the properties of the nanosilica-coated paper. The surface hydrophilicity of silica coated paper was related not only to silica pigment, but also to the chemical nature of the foaming agent. Standard paper properties were not affected by the thin silica coating.

High modulus poly (vinyl alcohol) fibers by zone drawing

1986 ◽  
Vol 1 (6) ◽  
pp. 861-869 ◽  
Author(s):  
Paul D. Garrett ◽  
David T. Grubb
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
High Modulus

BIODEGRADATION BEHAVIOR OF POLY(VINYL ALCOHOL) - WOOD COMPOSITES

2019 ◽  
Vol 18 (1) ◽  
pp. 125-136 ◽  
Author(s):  
Luiza Jecu ◽  
Iuliana Raut ◽  
Elena Grosu ◽  
Mariana Calin ◽  
Violeta Purcar ◽  
...  
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Wood Composites
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