69 0

Preparation of Linear Low Density Polyethylene/Poly(ethylene-co-vinyl acetate) Blend Films with Various Transparencies

Title
Preparation of Linear Low Density Polyethylene/Poly(ethylene-co-vinyl acetate) Blend Films with Various Transparencies
Author
최한곤
Issue Date
2009-07
Publisher
RAPRA TECHNOLOGY LTD
Citation
POLYMERS & POLYMER COMPOSITES, v. 17, no. 9, page. 575-580
Abstract
Linear low density polyethylene (LLDPE)/poly(ethylene-co-vinyl acetate) (EVAc) blend fi lms having variousvinyl acetate (VAc) contents (12, 18, and 25 wt.%) with various degrees of transparency were prepared using a hot plate press. Effects of VAc contents in EVAc and ratio of EVAc in LLDPE/EVAc blend films on the structure and properties of these films were investigated through a series of instrumental analyses. The transparencies of films were classified into three types: non-transparent (1-75 T(%)), semi-transparent (76-85 T(%)), and transparent (86-100 T(%)). With increasing the contents of VAc in EVAc and the ratio of EVAc in blend films, the transparencies of films were increased. The differential scanning calorimeter curves of blend films show that there are two obvious endothermic peaks at around 125 and 75-85 °C, which corresponded to the melting of the LLDPE and EVAc crystals, respectively. The intensity of crystalline peaks of LLDPE decreased as the ratio of EVAc in blend films was increased. The thermal stability of blend film decreased with increasing degree of transparency. This might be due to the fact that transparent fi lm can contain higher amount of amorphous regions, which were degraded at lower temperature than that of non-transparent films having high contents of crystalline regions. The storage modulus of non-transparent films was higher than that of semi-transparent films due to a higher crystallinity.
URI
https://www.proquest.com/docview/197460320?accountid=11283https://repository.hanyang.ac.kr/handle/20.500.11754/166008
ISSN
1478-2391; 0967-3911
DOI
10.1177/096739110901700906
Appears in Collections:
COLLEGE OF PHARMACY[E](약학대학) > PHARMACY(약학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE