Title: PREPARATION OF RECYCLED POLY(VINYL ALCOHOL) (PVA)/IODINE POLARIZING FILM
Page Range: p.391-396
Author(s): Man Ho Han; Jae Kyun Shin; Kyeong Il Oh; Young Jae Lee; Du Hyun Song; Yong Sik Chung; Yong Rok Lee; Han Gon Choi; Tae Hwan Oh; Sung Soo Han; Seok Kyun Noh; Won Seok Lyoo
File size: 226K
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 18
Issue No: No.7
Abstract
To precisely identify the effect of preparation conditions on the polarizing efficiency (PE) of recycled poly(vinyl alcohol) (PVA)/iodine complex film, PVA film and PVA/iodine polarizing film were prepared by using recycled nonwoven PVA with a number-average degree of polymerisation (Pn) of 1700, syndiotactic diad (s-diad) content 54.6%, and degree of saponification (DS) 97.6%. We investigated the effects of various conditions such as soaking time, temperature of I2/KI aqueous solution, draw ratio, and temperature of aqueous boric acid solution on the transmittance and PE of recycled PVA/iodine complex film. Maximum transmittance and PE values of recycled PVA/iodine complex film were 41.2% and 99.8%, respectively. It was found that the recycled PVA/ iodine polarizing film showed effective transmittance and PE values comparable with those of commercial PVA/ iodine polarizing film. 19 Refs.
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