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Effects of the special structure of bio‐based shell powder on the properties of shell‐polycaprolactone composite
Author(s) -
Weng Fangqing,
Zhang Peirui,
Koranteng Ernest,
Ma Nian,
Wu Zhengshun,
Wu Qiangxian
Publication year - 2020
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.48768
Subject(s) - polycaprolactone , materials science , ultimate tensile strength , composite number , composite material , prepolymer , polylactic acid , scanning electron microscope , elongation , polyurethane , izod impact strength test , shell (structure) , polymer
The natural clam shell (CS) has a unique CaCO 3 ‐proteoglycan structure which can be beneficial in improving the strength of materials as a result of the stiff CaCO 3 content present in it. Moreover, the existence of active groups such as hydroxyl groups, carboxyl groups, and amino groups in CS can make it possible to form chemical bonds with some functional groups in other materials. In this work, CS which is mostly regarded as waste was utilized to prepare compatible composites via melting process with biodegradable polycaprolactone (PCL). Addition of 15 wt % of polyurethane prepolymer as a compatibilizer to a designed weight ratio of 1 to 1 of CS powder and PCL increased the elongation at break of the composite from 9.3 to 536.5%, and also improved the tensile strength from 14.9 to 18.9 MPa. Particularly important was that scanning electron microscopy investigation revealed that the adhesion between the CS and PCL improved significantly as the content of the compatibilizer was increased. This work shows that CS has great potential applications in the area of compatible composites and could serve as an alternative material for reinforcement in polymer composites. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48768.