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Evidence of Melt Reaction Between Poly(3‐Hydroxybutyrate‐ co ‐3‐Hydroxyhexanoate) and Epoxidized Natural Rubber as Investigated by DSC, Isothermal TGA and FTIR Analyses
Author(s) -
Salim Yoga Sugama,
Saiter JeanMarc,
Natarajan Valliyappan David,
Kumar Sudesh,
Neon Gan Seng,
Han Chan Chin
Publication year - 2016
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201650024
Subject(s) - thermogravimetry , differential scanning calorimetry , materials science , fourier transform infrared spectroscopy , isothermal process , crystallization , natural rubber , thermal analysis , chemical engineering , analytical chemistry (journal) , polymer chemistry , nuclear chemistry , chemistry , organic chemistry , composite material , thermal , thermodynamics , physics , engineering
Summary This work describes properties of a new polymeric system obtained after melt reaction between poly(3‐hydroxybutyrate‐ co ‐3‐hydroxyhexanoate) [P(3HB‐ co ‐3HHx)] with 40% (in mass) of epoxidized natural rubber (ENR). Differential scanning calorimetry (DSC), thermogravimetry, infra‐red spectroscopy and confocal optical microscopy analysis were performed on this system. Before melt reaction, we found that ENR particles with diameters of more than 2 µm were homogeneously distributed in P(3HB‐ co ‐3HHx) phase using confocal optical microscope. From infrared spectroscopy, reaction engaged during the thermal cycle for sample preparation, leads to a melt reaction associated with inhibition of crystallization of P(3HB‐ co ‐3HHx) in the blend. This is also observed in DSC analysis. Furthermore, a progressive mass loss of up to 10% was observed after five half‐time of melt reaction by utilizing isothermal procedure in thermogravimetry.