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Application of recycled polyol and benzimidazole to the enhancement of antifungal activity of polyurethane
Author(s) -
Chung YongChan,
Lee Dong Hyun,
Choi Jae Won,
Chun Byoung Chul
Publication year - 2018
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.46600
Subject(s) - polyol , polyurethane , contact angle , materials science , glass transition , benzimidazole , grafting , chemical engineering , polymer chemistry , composite material , chemistry , organic chemistry , polymer , engineering
ABSTRACT Recycled polyol and benzimidazole were both grafted onto polyurethane (PU) to enhance the surface hydrophilicity and antifungal activity, respectively. The two grafted groups affected the viscosity, crosslink density, soft segment glass transition, breaking stress, flexibility at freezing temperature, shape recovery at −10 °C, surface hydrophilicity, and antifungal activity. The glass transition temperature increased from −67.5 °C for plain PU up to −60.8 °C after the grafting of polyol. The breaking stress and shape recovery of the grafted PU increased up to 425% and 200%, respectively, relative to plain PU because of the chemical linking by the grafted polyol. The hydrophilicity of PU, evaluated by the water contact angle and water swelling ratio, increased with increasing polyol content. A PU sample demonstrated excellent low‐temperature flexibility in comparison to plain PU and control sample. Finally, the PUs modified with grafted polyol and benzimidazole completely suppressed fungal growth. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135 , 46600.