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- W2804043969 abstract "Abstract Poly( l ‐lactic acid)/crosslinked polyurethane (PLLA/CPU) blends which were prepared via reactive blending of PLLA with poly( ϵ ‐caprolactone) (PCL), glycerol and 4,4′‐methylenediphenyl diisocyanate showed excellent toughness. The effects of the composition of the mixture and degree of crosslinking of CPU on the toughness of the PLLA/CPU blends (80/20 w/w) were studied in detail. Dynamic mechanical analysis and rheological measurements were used to characterize the structure of the in situ formed CPU in the PLLA matrix. A novel netlike phase structure was observed when the average molecular weight of PCL and degree of crosslinking were 1 kDa and 10%, respectively. The impact strength of the blend was enhanced from 2.2 kJ m −2 for pure PLLA to 62.4 kJ m −2 ; meanwhile, the elongation at break was increased to 489.8%. Therefore, the mechanical properties of PLLA/CPU blends can be easily tailored by tuning the composition of the mixture and the degree of crosslinking of CPU. © 2018 Society of Chemical Industry" @default.
- W2804043969 created "2018-06-01" @default.
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- W2804043969 date "2018-06-19" @default.
- W2804043969 modified "2023-09-27" @default.
- W2804043969 title "Effect of the composition and degree of crosslinking on the properties of poly(<scp>l</scp> -lactic acid)/crosslinked polyurethane blends" @default.
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- W2804043969 doi "https://doi.org/10.1002/pi.5626" @default.
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