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Mechanical behavior, structure, and reinforcement processes of TEMPO‐oxidized cellulose reinforced poly(lactic) acid
Author(s) -
Bulota Mindaugas,
Vesterinen ArjaHelena,
Hughes Mark,
Seppälä Jukka
Publication year - 2013
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.22390
Subject(s) - materials science , differential scanning calorimetry , ultimate tensile strength , composite material , cellulose , crystallization , thermal stability , dynamic mechanical analysis , composite number , lactic acid , izod impact strength test , pulp (tooth) , polylactic acid , chemical engineering , polymer , medicine , physics , genetics , pathology , biology , bacteria , engineering , thermodynamics
Poly(lactic) acid (PLA) was reinforced with acetylated TEMPO‐oxidized fibrillated cellulose (TOFC) prepared from birch pulp. Composite films were studied using dynamic mechanical thermal analysis, differential scanning calorimetry (DSC), as well as static mechanical testing. The storage modulus as well as tensile strength of PLA was improved on the addition of 30 wt% of TOFC by approximately 50% and 40%, respectively. Thermal stability as well as strength properties in moist environments (up to 90% relative humidity) was significantly improved at 15, 20, 25, and 30 wt% of TOFC. DSC showed that crystallization from solution took place during preparation of the composite films and was much greater than melt crystallization. POLYM. COMPOS., 2012. © 2013 Society of Plastics Engineers