Ontology highlight
ABSTRACT:
SUBMITTER: Jiang L
PROVIDER: S-EPMC6083698 | biostudies-literature | 2018 Jul
REPOSITORIES: biostudies-literature
Jiang Lei L Ren Zhiyong Z Zhao Wei W Liu Wentao W Liu Hao H Zhu Chengshen C
Royal Society open science 20180725 7
Four model polyurethane (PU) hard segments were synthesized by reaction of butanol with four typical diisocyanates. The four diisocyanates were aromatic 4,4'-diphenylmethane diisocyanate (4,4'-MDI) and MDI-50 (50% mixture of 2,4'-MDI and 4,4'-MDI), cycloaliphatic 4,4'-dicyclohexylmethane diisocyanate (HMDI) and linear aliphatic 1,6-hexamethylene diisocyanate (HDI). FTIR, <sup>1</sup>H NMR, <sup>13</sup>C NMR, MS, X-ray and DSC methods were employed to determine their structures and to analyse th ...[more]