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Highly thermostable and crystalline poly(butylene adipate) bionanocomposites prepared by in situ polycondensation with organically modified Moroccan beidellite clay
Author(s) -
Ilsouk Mohamed,
Raihane Mustapha,
Castelvetro Valter,
Lahcini Mohammed,
Bronco Simona,
Rhouta Benaissa,
Bianchi Sabrina,
Conzatti Lucia
Publication year - 2017
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.5342
Subject(s) - organoclay , materials science , thermogravimetric analysis , differential scanning calorimetry , in situ polymerization , condensation polymer , chemical engineering , polymer chemistry , adipate , thermal stability , crystallinity , dispersity , exfoliation joint , polyester , polymer , polymerization , composite material , nanotechnology , engineering , physics , graphene , thermodynamics
Bionancomposites from bioplastics and nanoclays are of great interest for packaging, agricultural and other large‐volume and niche applications due to their enhanced physical, thermal, mechanical and processing characteristics compared to the parent polymer. In this study, the biodegradable polyester poly(butylene adipate) ( PBA ) was synthesized by in situ polycondensation catalysed by titanium tetrabutoxide in the presence of the natural Moroccan clay beidellite ( BDT ). Optimization of the nanoclay exfoliation in the bionanocomposite was achieved by cation exchange of BDT with cetyltrimethylammonium bromide ( CTA ) and by selecting the most effective among a range of organically modified x CTA‐BDT ( x = CTA/BDT equivalent feed ratio). Fourier transform infrared and 1 H NMR spectral and size exclusion chromatographic analyses confirmed the effectiveness of the in situ polymerization, yielding structurally regular PBA with narrow molecular weight dispersity and 7750