Morphology and structure of highly elastic poly(vinyl alcohol) hydrogel prepared by repeated freezing-and-melting

1986 ◽  
Vol 264 (7) ◽  
pp. 595-601 ◽  
Author(s):  
F. Yokoyama ◽  
I. Masada ◽  
K. Shimamura ◽  
T. Ikawa ◽  
K. Monobe
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Morphology And Structure ◽  
Repeated Freezing

Structure of poly(vinyl alcohol) hydrogel prepared by repeated freezing and melting

Polymer ◽  
1989 ◽  
Vol 30 (4) ◽  
pp. 762-765 ◽  
Author(s):  
Masanobu Nagura ◽  
Tomoki Hamano ◽  
Hiroshi Ishikawa
Keyword(s):  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Repeated Freezing

Comparative Study on the Composites with Chopped Different Parts of Rice Straw as Raw Materials

2014 ◽  
Vol 525 ◽  
pp. 85-88
Author(s):  
Chuan Bao Wu ◽  
Jian Mei Yin
Keyword(s):  
Tensile Strength ◽  
Comparative Study ◽  
Rice Straw ◽  
Hot Pressing ◽  
Vinyl Alcohol ◽  
Raw Materials ◽  
Tensile Elongation ◽  
Poly Vinyl Alcohol ◽  
Morphology And Structure ◽  
Different Parts

The upper part and lower part of rice straw were respectively used as raw materials to prepare composites with poly (vinyl alcohol) (PVA) by hot-pressing at 140°C for 10 min. The performance differences of two kinds of composites were studied. Results showed that composites prepared with upper-part rice straw had higher tensile strength, strength at tensile break and hardness than that with lower-part rice straw. But the tensile elongation of composite prepared with upper-part rice straw was lower than that with upper-part rice straw. Difference ratio of tensile strength is higher than 6% and difference ratio of tensile elongation is higher than 16%. These differences were related to morphology and structure of upper-part rice straw and lower-part rice straw. Two parts of rice straw are both hollow, but upper-part rice straw has thinner holes. So the defect ratio of composite prepared with upper-part rice straw was low.

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
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