TRIREFRINGENCE TECHNIQUE FOR THE ANALYSIS OF BIAXIAL DEFORMATION

POLY(ETHYLENE TEREPHTHALATE) AND ISOTACTIC POLYPROPYLENE.

Jia Y. Guan, Ravi F Saraf, Roger S. Porter

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

For amorphous poly(ethylene terephthalate) (PET), uniaxial deformation induces both chain orientation and crystallization. Conversely, the crystallinity drops on draw of highly crystalline (30-50%) PET. In contrast, crystals of isotactic polypropylene (i-PP) uniaxially drawn above glass transition (T//g) orient, but with no significant change in crystallinity. A comparison between i-PP and PET is made to distinguish the effect of biaxial deformation on pre-crystallized polymer (i-PP) and strain crystallizable polymer (PET). Trirefringence is used to characterize the orientation inducead by the deformation field on PET and i-PP.

Original languageEnglish (US)
Pages (from-to)586-588
Number of pages3
JournalAnnual Technical Conference - Society of Plastics Engineers
StatePublished - Dec 1 1986

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Polyethylene terephthalates
Polypropylenes
Polymers
Crystal orientation
Glass transition
Crystallization
Crystalline materials
Crystals

ASJC Scopus subject areas

  • Engineering(all)

Cite this

@article{0e9298feb21540d481d499e65bb9dc6b,
title = "TRIREFRINGENCE TECHNIQUE FOR THE ANALYSIS OF BIAXIAL DEFORMATION: POLY(ETHYLENE TEREPHTHALATE) AND ISOTACTIC POLYPROPYLENE.",
abstract = "For amorphous poly(ethylene terephthalate) (PET), uniaxial deformation induces both chain orientation and crystallization. Conversely, the crystallinity drops on draw of highly crystalline (30-50{\%}) PET. In contrast, crystals of isotactic polypropylene (i-PP) uniaxially drawn above glass transition (T//g) orient, but with no significant change in crystallinity. A comparison between i-PP and PET is made to distinguish the effect of biaxial deformation on pre-crystallized polymer (i-PP) and strain crystallizable polymer (PET). Trirefringence is used to characterize the orientation inducead by the deformation field on PET and i-PP.",
author = "Guan, {Jia Y.} and Saraf, {Ravi F} and Porter, {Roger S.}",
year = "1986",
month = "12",
day = "1",
language = "English (US)",
pages = "586--588",
journal = "Annual Technical Conference - Society of Plastics Engineers",
issn = "0733-4192",

}

TY - JOUR

T1 - TRIREFRINGENCE TECHNIQUE FOR THE ANALYSIS OF BIAXIAL DEFORMATION

T2 - POLY(ETHYLENE TEREPHTHALATE) AND ISOTACTIC POLYPROPYLENE.

AU - Guan, Jia Y.

AU - Saraf, Ravi F

AU - Porter, Roger S.

PY - 1986/12/1

Y1 - 1986/12/1

N2 - For amorphous poly(ethylene terephthalate) (PET), uniaxial deformation induces both chain orientation and crystallization. Conversely, the crystallinity drops on draw of highly crystalline (30-50%) PET. In contrast, crystals of isotactic polypropylene (i-PP) uniaxially drawn above glass transition (T//g) orient, but with no significant change in crystallinity. A comparison between i-PP and PET is made to distinguish the effect of biaxial deformation on pre-crystallized polymer (i-PP) and strain crystallizable polymer (PET). Trirefringence is used to characterize the orientation inducead by the deformation field on PET and i-PP.

AB - For amorphous poly(ethylene terephthalate) (PET), uniaxial deformation induces both chain orientation and crystallization. Conversely, the crystallinity drops on draw of highly crystalline (30-50%) PET. In contrast, crystals of isotactic polypropylene (i-PP) uniaxially drawn above glass transition (T//g) orient, but with no significant change in crystallinity. A comparison between i-PP and PET is made to distinguish the effect of biaxial deformation on pre-crystallized polymer (i-PP) and strain crystallizable polymer (PET). Trirefringence is used to characterize the orientation inducead by the deformation field on PET and i-PP.

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M3 - Conference article

SP - 586

EP - 588

JO - Annual Technical Conference - Society of Plastics Engineers

JF - Annual Technical Conference - Society of Plastics Engineers

SN - 0733-4192

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