Heat durability of biaxially oriented polyester films

Citation
F. Terauchi et al., Heat durability of biaxially oriented polyester films, KOBUNSH RON, 56(1), 1999, pp. 45-47
Citations number
3
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
KOBUNSHI RONBUNSHU
ISSN journal
03862186 → ACNP
Volume
56
Issue
1
Year of publication
1999
Pages
45 - 47
Database
ISI
SICI code
0386-2186(1999)56:1<45:HDOBOP>2.0.ZU;2-T
Abstract
A biaxially oriented copolymer film of ethylene terephthalate and isophthal ate was annealed at a temperature between 160 degrees C and 220 degrees C. The molecular weight decreased and crystallization progressed with increasi ng annealing time, and then tensile strength of the film was decreased by t hese changes. Additionally, we investigated the effect of molality of ethyl ene isophthalate on heat durability, Although the heat durability of the co polymer films got shorter with increasing the molality of ethylene isophtha late at a fixed temperature, it became longer with increasing the molality of ethylene isophthalate at the temperature which was 5 degrees C lower tha n the melting point of each copolymer.