Tuning nanophase separation behavior in segmented polyhydroxyurethanes via judicious choice of soft segment

Goliath Beniah, Brice E. Uno, Tian Lan, William Heath, Karl A. Scheidt, John M. Torkelson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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

Original languageEnglish (US)
Title of host publicationMaterials Engineering and Sciences Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting
PublisherAIChE
Pages605-606
Number of pages2
Volume2
ISBN (Electronic)9781510834408
StatePublished - Jan 1 2016
EventMaterials Engineering and Sciences Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting - San Francisco, United States
Duration: Nov 13 2016Nov 18 2016

Other

OtherMaterials Engineering and Sciences Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting
CountryUnited States
CitySan Francisco
Period11/13/1611/18/16

ASJC Scopus subject areas

  • Mechanics of Materials
  • Materials Science(all)

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  • Cite this

    Beniah, G., Uno, B. E., Lan, T., Heath, W., Scheidt, K. A., & Torkelson, J. M. (2016). Tuning nanophase separation behavior in segmented polyhydroxyurethanes via judicious choice of soft segment. In Materials Engineering and Sciences Division 2016 - Core Programming Area at the 2016 AIChE Annual Meeting (Vol. 2, pp. 605-606). AIChE.