Physical Properties of Dendritic Macromolecules: A Study of Glass Transition Temperature

K. L. Wooley; C. J. Hawker; J. M. Pochan; J. M.J. Fréchet

doi:10.1021/ma00059a006

Physical Properties of Dendritic Macromolecules: A Study of Glass Transition Temperature

K. L. Wooley, C. J. Hawker, J. M. Pochan, J. M.J. Fréchet^*

^*Corresponding author for this work

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

315 Scopus citations

Abstract

The variation of glass transition temperature with molecular weight and chain-end composition for dendritic polyethers and polyesters was studied. A new and modified version of the chain-end free volume theory was derived to account for the large number of chain ends in these unusual structures. For both homopolymers and a variety of novel block copolymers, the experimental variation in T_g with molecular weight was found to correlate well with theoretical predictions, thus demonstrating the wide applicability of the chain-end free volume theory. The glass transition was found to be greatly affected by the nature of the chain ends and internal monomer units.

Original language	English (US)
Pages (from-to)	1514-1519
Number of pages	6
Journal	Macromolecules
Volume	26
Issue number	7
DOIs	https://doi.org/10.1021/ma00059a006
State	Published - 1993
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1021/ma00059a006

Cite this

@article{8faa9e95a3c6432f82fec9a98e474687,

title = "Physical Properties of Dendritic Macromolecules: A Study of Glass Transition Temperature",

abstract = "The variation of glass transition temperature with molecular weight and chain-end composition for dendritic polyethers and polyesters was studied. A new and modified version of the chain-end free volume theory was derived to account for the large number of chain ends in these unusual structures. For both homopolymers and a variety of novel block copolymers, the experimental variation in Tg with molecular weight was found to correlate well with theoretical predictions, thus demonstrating the wide applicability of the chain-end free volume theory. The glass transition was found to be greatly affected by the nature of the chain ends and internal monomer units.",

author = "Wooley, {K. L.} and Hawker, {C. J.} and Pochan, {J. M.} and Fr{\'e}chet, {J. M.J.}",

year = "1993",

doi = "10.1021/ma00059a006",

language = "English (US)",

volume = "26",

pages = "1514--1519",

journal = "Macromolecules",

issn = "0024-9297",

publisher = "American Chemical Society",

number = "7",

}

TY - JOUR

T1 - Physical Properties of Dendritic Macromolecules

T2 - A Study of Glass Transition Temperature

AU - Wooley, K. L.

AU - Hawker, C. J.

AU - Pochan, J. M.

AU - Fréchet, J. M.J.

PY - 1993

Y1 - 1993

N2 - The variation of glass transition temperature with molecular weight and chain-end composition for dendritic polyethers and polyesters was studied. A new and modified version of the chain-end free volume theory was derived to account for the large number of chain ends in these unusual structures. For both homopolymers and a variety of novel block copolymers, the experimental variation in Tg with molecular weight was found to correlate well with theoretical predictions, thus demonstrating the wide applicability of the chain-end free volume theory. The glass transition was found to be greatly affected by the nature of the chain ends and internal monomer units.

AB - The variation of glass transition temperature with molecular weight and chain-end composition for dendritic polyethers and polyesters was studied. A new and modified version of the chain-end free volume theory was derived to account for the large number of chain ends in these unusual structures. For both homopolymers and a variety of novel block copolymers, the experimental variation in Tg with molecular weight was found to correlate well with theoretical predictions, thus demonstrating the wide applicability of the chain-end free volume theory. The glass transition was found to be greatly affected by the nature of the chain ends and internal monomer units.

UR - http://www.scopus.com/inward/record.url?scp=0027556890&partnerID=8YFLogxK

U2 - 10.1021/ma00059a006

DO - 10.1021/ma00059a006

M3 - Article

AN - SCOPUS:0027556890

SN - 0024-9297

VL - 26

SP - 1514

EP - 1519

JO - Macromolecules

JF - Macromolecules

IS - 7

ER -

Physical Properties of Dendritic Macromolecules: A Study of Glass Transition Temperature

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this