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Polymer/carbon nanotube composite film formation: A fluorescence study
Author(s) -
Yargı Önder,
Uğur Şaziye,
Pekcan Önder
Publication year - 2014
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.22725
Subject(s) - materials science , void (composites) , carbon nanotube , composite material , composite number , annealing (glass) , polymer , nanocomposite , glass transition , fluorescence , activation energy , organic chemistry , chemistry , physics , quantum mechanics
In this study, the effect of multi‐walled Carbon nanotube (MWNT) on film formation behavior of Polystrene (PS) latex film was investigated by using steady state fluorescence technique. Films were prepared by mixing of pyrene (P)‐labeled PS latex with different amounts of MWNTs varying in the range between 0 and 20 wt%. After drying, MWNT containing films were separately annealed above glass transition temperature ( T g ) of PS ranging from 100 to 270°C for 10 min. In order to monitor film formation behavior of PS/MWNT composites, Scattered light ( I s ) and fluorescence intensities ( I P ) from P were measured after each annealing step to monitor the stages of film formation. At 0–20 wt% range of MWNT content films, minimum film formation ( T o ), void closure ( T v ), and healing, ( T h ) temperatures were determined. Void closure and interdiffusion stages were modeled and related activation energies were determined. It was observed that while void closure activation energies increased, backbone activation energies decreased as the percent of MWNT is increased in the composite films. POLYM. COMPOS., 35:817–826, 2014. © 2013 Society of Plastics Engineers