Thermal stability and decomposition mechanism of polyp-acryloyloxybenzoic acid and poly (p-methacryloyloxybenzoic acid) and their graft copolymers with polypropylene, part II
Yükleniyor...
Dosyalar
Tarih
2008
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Thermal stability and decomposition mechanism of poly(p-acryloyloxybenzoic) acid (PABA), p-methacryloyloxybenzoic acid (PMBA), and their graft coproducts of PP were studied by differential scanning calorimetry, direct pyrolysis mass spectrometry, and TG/IR system, combined thermogravimetric analyzer, and FTIR spectrometer. The homopolymers and corresponding grafts were found to be stable in nitrogen atmosphere but started to decompose under atmospheric conditions when heated above 230°C. PABA and PAPA-g-PP showed a better thermal stability compared to the other polymer. The degradation proceeded predominantly by decomposition of side groups giving phenol, benzoic acid, hydroxybenzoic acid, carboxylic and carbonyl groups, and by decomposition of phenol into cyclodiene mainly. It was also seen that the degradation path did not greatly changed whether the PABA or PMBA were homopolymers or grafted onto PP but the induction temperature of grafted polymers was seen at some 10-20°C higher. © 2007 Wiley Periodicals, Inc.
Açıklama
Anahtar Kelimeler
Grafting, P-acryloyloxybenzoic acid, P-metha-cryloyloxybenzoic acid, Polypropylene, Thermal stability and decomposition
Kaynak
Journal of Applied Polymer Science
WoS Q Değeri
Scopus Q Değeri
Q2
Cilt
108
Sayı
1
