A dynamic mechanical and thermal analysis of unplasticized and plasticized poly(vinyl alcohol)/methylcellulose blends

2001 ◽  
Vol 80 (10) ◽  
pp. 1825-1834 ◽  
Author(s):  
Jun-Seo Park ◽  
Jang-Woo Park ◽  
Eli Ruckenstein
Keyword(s):  
Thermal Analysis ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Dynamic Mechanical

Poly(Vinyl Alcohol) Fiber Reinforced High Density Poly(Ethylene) Composites: Dynamic Mechanical Thermal Analysis

2018 ◽  
Vol 773 ◽  
pp. 46-50 ◽  
Author(s):  
Achmad Chafidz ◽  
Umi Rofiqah ◽  
Tintin Mutiara ◽  
Muhammad Rizal ◽  
Mujtahid Kaavessina ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Storage Modulus ◽  
Dynamic Mechanical Thermal Analysis ◽  
Vinyl Alcohol ◽  
High Density ◽  
Poly Vinyl Alcohol ◽  
Dynamic Mechanical ◽  
Melt Compounding ◽  
Twin Screw ◽  
Pva Fiber

In the present work, high density polyethylene (HDPE)/poly (vinyl alcohol) (PVA) fiber composites with four different PVA fiber loadings (i.e. 0, 5, 10, 20 wt%) have been prepared via melt compounding method using a twin-screw extruder. The composites were characterized for their morphology by using a scanning electron microscopy (SEM). Whereas, the dynamic mechanical thermal analysis (DMTA) was carried out by using an oscillatory rheometer. The DMTA test was carried out under torsion mode using temperature sweep test on rectangular composites samples. The DMTA results showed that the storage modulus (G¢) of the composites were higher than that of the neat HDPE and increased with increasing PVA fiber loadings. This indicated that there was a considerable stiffness enhancement of the composites. For example, at temperature of 60°C, the increases of stiffness (i.e. storage modulus) of the composites were approximately 3, 31, and 54% for PVAC-5, 10, and 20, respectively. Whereas, at higher temperature (i.e. 120°C), the increases were about 4, 50, and 98% for PVAC-5, 10, and 20, respectively. These results indicated that even at higher temperatures, the enhancement of storage modulus of the composites was still high.

Lignin-poly (vinyl alcohol) blends studied by thermal analysis

1999 ◽  
Vol 66 (2) ◽  
pp. 199-208 ◽  
Author(s):  
Elisângela Corradini ◽  
Edgardo Alfonso Gómez Pineda ◽  
Ana Adelina Winkler Hechenleitner
Keyword(s):  
Thermal Analysis ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol
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