Effect of hexafluoroisobutylene moieties on the structure and properties of copolymers of ethylene and chlorotrifluoroethylene

N. S. Murthy; S. Chandrasekaran; H. K. Reimschuessel

doi:10.1016/0032-3861(88)90141-3

Effect of hexafluoroisobutylene moieties on the structure and properties of copolymers of ethylene and chlorotrifluoroethylene

N. S. Murthy, S. Chandrasekaran, H. K. Reimschuessel

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

The thermal stress-cracking properties of ethylene-chlorotrifluoroethylene copolymer (E/CTFE copolymer, marketed as Halar® by Ausimont USA Inc.) has been improved considerably by using 2 to 6 wt% hexafluoroisobutylene (HFIB) as a termonomer. This improvement arises from the increased flexibility of the polymer molecule in the presence of HFIB units, which also reduces the average lamellar repeat from 300-400 Å for the copolymer to 135-185 Å for the terpolymer. We postulate that crystalline lamellae consist entirely of alternating units of ethylene and chlorotrifluoroethylene, while the HFIB substituted E/CTFE segments are segregated in the interlamellar amorphous regions. These structural features are used to explain the role of HFIB in enhancing the resistance of the terpolymer to environmental stress-cracking.

Original language	English (US)
Pages (from-to)	829-832
Number of pages	4
Journal	Polymer
Volume	29
Issue number	5
DOIs	https://doi.org/10.1016/0032-3861(88)90141-3
State	Published - May 1988
Externally published	Yes

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Materials Chemistry

Keywords

ethylene/chlorotrifluoroethylene copolymer
hexafluoroisobutylene termonomer
thermal stress-cracking resistance

Access to Document

10.1016/0032-3861(88)90141-3

Cite this

@article{56a894e4808b4d69b8a04d3e1eff1a6c,

title = "Effect of hexafluoroisobutylene moieties on the structure and properties of copolymers of ethylene and chlorotrifluoroethylene",

abstract = "The thermal stress-cracking properties of ethylene-chlorotrifluoroethylene copolymer (E/CTFE copolymer, marketed as Halar{\textregistered} by Ausimont USA Inc.) has been improved considerably by using 2 to 6 wt% hexafluoroisobutylene (HFIB) as a termonomer. This improvement arises from the increased flexibility of the polymer molecule in the presence of HFIB units, which also reduces the average lamellar repeat from 300-400 {\AA} for the copolymer to 135-185 {\AA} for the terpolymer. We postulate that crystalline lamellae consist entirely of alternating units of ethylene and chlorotrifluoroethylene, while the HFIB substituted E/CTFE segments are segregated in the interlamellar amorphous regions. These structural features are used to explain the role of HFIB in enhancing the resistance of the terpolymer to environmental stress-cracking.",

keywords = "ethylene/chlorotrifluoroethylene copolymer, hexafluoroisobutylene termonomer, thermal stress-cracking resistance",

author = "Murthy, {N. S.} and S. Chandrasekaran and Reimschuessel, {H. K.}",

year = "1988",

month = may,

doi = "10.1016/0032-3861(88)90141-3",

language = "English (US)",

volume = "29",

pages = "829--832",

journal = "Polymer",

issn = "0032-3861",

publisher = "Elsevier B.V.",

number = "5",

}

TY - JOUR

T1 - Effect of hexafluoroisobutylene moieties on the structure and properties of copolymers of ethylene and chlorotrifluoroethylene

AU - Murthy, N. S.

AU - Chandrasekaran, S.

AU - Reimschuessel, H. K.

PY - 1988/5

Y1 - 1988/5

N2 - The thermal stress-cracking properties of ethylene-chlorotrifluoroethylene copolymer (E/CTFE copolymer, marketed as Halar® by Ausimont USA Inc.) has been improved considerably by using 2 to 6 wt% hexafluoroisobutylene (HFIB) as a termonomer. This improvement arises from the increased flexibility of the polymer molecule in the presence of HFIB units, which also reduces the average lamellar repeat from 300-400 Å for the copolymer to 135-185 Å for the terpolymer. We postulate that crystalline lamellae consist entirely of alternating units of ethylene and chlorotrifluoroethylene, while the HFIB substituted E/CTFE segments are segregated in the interlamellar amorphous regions. These structural features are used to explain the role of HFIB in enhancing the resistance of the terpolymer to environmental stress-cracking.

AB - The thermal stress-cracking properties of ethylene-chlorotrifluoroethylene copolymer (E/CTFE copolymer, marketed as Halar® by Ausimont USA Inc.) has been improved considerably by using 2 to 6 wt% hexafluoroisobutylene (HFIB) as a termonomer. This improvement arises from the increased flexibility of the polymer molecule in the presence of HFIB units, which also reduces the average lamellar repeat from 300-400 Å for the copolymer to 135-185 Å for the terpolymer. We postulate that crystalline lamellae consist entirely of alternating units of ethylene and chlorotrifluoroethylene, while the HFIB substituted E/CTFE segments are segregated in the interlamellar amorphous regions. These structural features are used to explain the role of HFIB in enhancing the resistance of the terpolymer to environmental stress-cracking.

KW - ethylene/chlorotrifluoroethylene copolymer

KW - hexafluoroisobutylene termonomer

KW - thermal stress-cracking resistance

UR - http://www.scopus.com/inward/record.url?scp=0024001881&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024001881&partnerID=8YFLogxK

U2 - 10.1016/0032-3861(88)90141-3

DO - 10.1016/0032-3861(88)90141-3

M3 - Article

AN - SCOPUS:0024001881

SN - 0032-3861

VL - 29

SP - 829

EP - 832

JO - Polymer

JF - Polymer

IS - 5

ER -

Effect of hexafluoroisobutylene moieties on the structure and properties of copolymers of ethylene and chlorotrifluoroethylene

Abstract

All Science Journal Classification (ASJC) codes

Keywords

Access to Document

Other files and links

Fingerprint

Cite this