TY - GEN
T1 - Tuning nanophase separation behavior in segmented polyhydroxyurethanes via judicious choice of soft segment
AU - Beniah, Goliath
AU - Uno, Brice E.
AU - Lan, Tian
AU - Heath, William
AU - Scheidt, Karl A.
AU - Torkelson, John M.
N1 - Publisher Copyright:
© 2016 American Institute of Chemical Engineers. All rights reserved.
PY - 2016
Y1 - 2016
N2 - Segmented polyurethanes (PUs) are composed of alternating sequences of soft and hard blocks. Depending on the composition of these blocks, they can exhibit properties ranging from soft elastomers to hard plastics while retaining the processing characteristics of thermoplastics. The soft blocks are typically long, flexible molecules with a glass transition temperature (Tg) below room temperature while the hard blocks have a Tg above room temperature and are composed of diisocyanate condensed with small molecule diol. Segmented PUs typically exhibit excellent nanophase separation due to the incompatibility between the soft and hard domains as well as the hydrogen bonding between polar urethane units in the hard domain. Varying degrees of nanophase separation are expected depending upon the structures of diisocyanates, soft segments, and chain extenders as well as overall material compositions.1,2
AB - Segmented polyurethanes (PUs) are composed of alternating sequences of soft and hard blocks. Depending on the composition of these blocks, they can exhibit properties ranging from soft elastomers to hard plastics while retaining the processing characteristics of thermoplastics. The soft blocks are typically long, flexible molecules with a glass transition temperature (Tg) below room temperature while the hard blocks have a Tg above room temperature and are composed of diisocyanate condensed with small molecule diol. Segmented PUs typically exhibit excellent nanophase separation due to the incompatibility between the soft and hard domains as well as the hydrogen bonding between polar urethane units in the hard domain. Varying degrees of nanophase separation are expected depending upon the structures of diisocyanates, soft segments, and chain extenders as well as overall material compositions.1,2
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M3 - Conference contribution
AN - SCOPUS:85019079787
T3 - Materials Engineering and Sciences Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting
SP - 605
EP - 606
BT - Materials Engineering and Sciences Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting
PB - AIChE
T2 - Materials Engineering and Sciences Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting
Y2 - 13 November 2016 through 18 November 2016
ER -