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Nonradiative energy transfer study on the interface of compatibilized linear low density polyethylene/poly(methyl methacrylate) blends
Author(s) -
Zhao Hanying,
Huang Baotong
Publication year - 1998
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/(sici)1521-3935(19980201)199:2<307::aid-macp307>3.0.co;2-l
Subject(s) - copolymer , linear low density polyethylene , polybutadiene , methyl methacrylate , materials science , polymer chemistry , chromophore , polymer , polyethylene , acceptor , poly(methyl methacrylate) , polypropylene , compatibilization , polymer blend , analytical chemistry (journal) , photochemistry , chemistry , composite material , organic chemistry , physics , condensed matter physics
Blends of chromophore‐labeled LLDPE and chromophore‐labeled PMMA compatibilized by block copolymer of hydrogenated polybutadiene and methyl methacrylate (PHB‐ b ‐PMMA) were studied by nonradiative energy transfer (NRET) technique. The ratio of fluorescence intensity of the donor at 336 nm and the acceptor at 408 nm ( I D / I A ) decreased with an increase in block copolymer content. At about 8 wt.‐% block copolymer content I D / I A reached a minimum value, indicating the interdiffusion of LLDPE chains and PMMA chains in the interface is strongest. The influence of temperature on the interdiffusion of polymer chains in the interface was also examined. Samples quenched in liquid nitrogen from 140°C showed lower energy transfer efficiencies than those annealed from 150°C to room temperature.