Interpolymer Complex between Hydroxypropyl Cellulose and Maleic Acid–Styrene Copolymer: Phase Behavior of Semi‐Dilute Solutions
作者： Gina-Gabriela Bumbu , John Eckelt , Bernhard A. Wolf , Cornelia Vasile
关键词: Ternary numeral system 、 Phase (matter) 、 Styrene 、 Materials science 、 Copolymer 、 Hydroxypropyl cellulose 、 Chemical engineering 、 Maleic acid 、 Cloud point 、 Polymer chemistry 、 Polymer
摘要: Summary: The phase behavior of a water/hydroxypropyl cellulose/maleic acid–styrene copolymer (H2O/HPC/MAc-S) system was investigated in the semi-dilute range by turbidimetry, rheology, and optical microscopy. two polymers under investigation form interpolymer complexes via hydrogen bonding. In case total polymer concentration cpol = 5 mg · mL−1 second segregates upon heating homogeneous ternary system. By applying constant shear rate ( = 50 s−1) separation temperature is 10–15 °C lower than for an unsheared one. For cpol = 10 has already occurred at room when binary solutions are mixed. distribution partners among coexisting phases examined FT-IR spectroscopy. stoichiometry interpolymeric complex (IPC) estimated to be HPC/MAc-S = 40:60 (w/w) independent cpol. The HPC/MAc-S aqueous mixtures versus weight fraction HPC blend.
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