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Keywords: hard segment
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Journal Articles
Emerging Materials Research (2014) 3 (2): 91–100.
Published: 01 April 2014
... of polyol (polyester or polyether) and low-molecular-weight diols or diamines as chain extender. PUs consist of a soft segment (S-S) (polyol) and a hard component derived from diisocynates and chain extender called hard segment (H-S). S-S imparts elastic properties into polymeric structure. However, H-S...

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