of the resin by 35-50 deg.C to obtain a uniaxially stretchred aliphatic polyester film with haze of 2.0-10.0% and impact strength of 2kg.cm or more.OYAMA TOSHIKATSU大山 敏勝MORITA SHUICHI守田 修一HOTTA FUMIO堀田 文夫IMAIZUMI MITSUHIRO...
Aliphatic polyesters have been used in very few applications mainly because of their low melting points and low glass transition temperatures (generally less than 65° C. and -30° C., respectively). At room temperature, the physical form of many of the aliphatic polyesters is as a thick, vi...
Specifically, the quantity (ΔHTc1) of heat of low-temperature crystallization is calculated out by integrating areas of exothermic peaks [generally, areas within a range of (the low-temperature crystallization temperature (Tc1)±20° C.)] near the low-temperature crystallization temperature (Tc1...
The absorption peaks at 2939 and 2864 cm−1 were assigned to the anti-symmetric and symmetric stretch vibration of -CH2-. The peaks at 1724 and 1150 cm−1 were attributed to aliphatic ester CO and ester C-O-C stretching vibration, respectively. The results from FT-IR spectrum ...
is 80-120 deg.C and a number average mol.wt. is 30,000 or more is molded by an extrusion film forming method. Subsequently, the formed film is longitudinally stretched by 3-8 times at temp. lower than the m.p. of the resin by 35-50 deg.C to obtain a uniaxially stretchred ...
FT-IR (KBr, cm−1): 3302 (VN-H), 3065 (VN-Hand VC-N), 2952–2857 (CH asymmetric and symmetric stretching vibration), 1630 (Amide-I, VC=O), 1536 (Amide-II, VC–N stretch and VN–H bend), 1460 (Amide-III, VC–N, δC–H), 1255 (Amide-IV, VC–C=O), 686 (Amide-V...