Bio-inspired reinforcement of cyclosiloxane hybrid polymer via ‘molecular stitching’

Bio-inspired reinforcement of cyclosiloxane hybrid polymer via ‘molecular stitching’

Cyclosiloxane hybrid polymer (CHP) was identified as a nacre-like structure, and was reinforced in a bio-inspired way through the incorporation of soft PDMS segment. Simultaneous improvement in both toughness and strength was observed, and the corresponding reinforcing mechanism was proposed to expl...

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Bibliographic Details
Main Authors: Song, Yujie, Chen, Xuelong, Liang, Yen Nan, Zhang, Liying, Liu, Ming, Hu, Xiao
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2021
Subjects:
Engineering::Materials
Bio-inspired
Simultaneous Reinforcement
Online Access:https://hdl.handle.net/10356/150419
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Institution: Nanyang Technological University
Language: English
Description
Summary:Cyclosiloxane hybrid polymer (CHP) was identified as a nacre-like structure, and was reinforced in a bio-inspired way through the incorporation of soft PDMS segment. Simultaneous improvement in both toughness and strength was observed, and the corresponding reinforcing mechanism was proposed to explain this phenomenon. It is believed that PDMS exited as two phases in the CHP. The homogeneously dispersed PDMS chains contribute positively to both the toughness and the strength via ‘molecular stitching', the phase separated PDMS particles improve the toughness but deteriorate the strength. Other types of siloxane-based additives were incorporated to prove the mechanism proposed.

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