TY - GEN
T1 - Tg in polymer/oligomer athermal blends
AU - Zheng, Wei
AU - Simon, Sindee L.
PY - 2007
Y1 - 2007
N2 - The glass transition behavior of poly(α-methyl styrene), its tridecamer, and an athermal blend with its hexamer is investigated using differential scanning calorimetry. The glass transition, Tg, of the blend is found to become broader than that of the pure materials. However, the absolute heat capacity of the blend remains unchanged. The length scale of the cooperatively rearranging regions of the samples, as well as previously studied pentamer, polymer, and blends, is estimated from Donth's fluctuation model. The broadening of Tg is found to accompany a decrease of the length scale. In addition, the correlation between Tg, fragility, and the length scale of CRR is also examined.
AB - The glass transition behavior of poly(α-methyl styrene), its tridecamer, and an athermal blend with its hexamer is investigated using differential scanning calorimetry. The glass transition, Tg, of the blend is found to become broader than that of the pure materials. However, the absolute heat capacity of the blend remains unchanged. The length scale of the cooperatively rearranging regions of the samples, as well as previously studied pentamer, polymer, and blends, is estimated from Donth's fluctuation model. The broadening of Tg is found to accompany a decrease of the length scale. In addition, the correlation between Tg, fragility, and the length scale of CRR is also examined.
UR - http://www.scopus.com/inward/record.url?scp=34648835233&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:34648835233
SN - 1604232145
SN - 9781604232141
T3 - Annual Technical Conference - ANTEC, Conference Proceedings
SP - 1788
EP - 1792
BT - Society of Plastics Engineers Annual Technical Conference
Y2 - 6 May 2007 through 11 May 2007
ER -