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A technology for oxidizing cyclohexene and carbon dioxide, which is applied in the field of polymers and can solve problems such as brittleness
Inactive Publication Date: 2011-08-03
TORAY FIBER RES INST(CHINA) CO LTD
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However, the polymer exhibits the disadvantage of brittleness (see Journal ofApplied Polymer Science, 2003, Vol.89, 1163-1176 and Polymer, 2001, 42, 3995-4004)
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Embodiment 1
[0016] Get PCHC (weight average molecular weight 230,000, molecular weight distribution 3.5, n:(n+m)=0.9) 80g (parts by weight, the same below), ABS10g, acrylonitrile-styrene-acrylic acid terpolymer AS5M10g. Mix well and dry in vacuum at 80°C for 10 hours. The blend of PCHC and ABS was obtained by banburying at 200°C at a speed of 30r / min in a Haake internal mixer.
[0017] The above blends were made into film tensile samples, and the tensile properties were tested. The Young's modulus is 1.8GPa, the tensile strength is 41.4MPa, the elongation at break is 3.3%, and the glass transition temperature is 119°C.
Embodiment 2
[0019] Get PCHC (weight average molecular weight 230,000, molecular weight distribution 2.5, n:(n+m)=0.95) PCHC80g, ABS10g, the terpolymer AS5M10g of acrylonitrile-styrene-acrylic acid, dissolve in 50ml chloroform under nitrogen protection, Most of the chloroform was distilled off under reduced pressure, mixed evenly, and dried under vacuum at 80° C. for 10 hours.
[0020] The above blends were made into film tensile samples, and the tensile properties were tested. The Young's modulus is 1.4GPa, the tensile strength is 42MPa, the elongation at break is 8.7%, and the glass transition temperature is 111.3°C.
Embodiment 3
[0022] Take PCHC (weight average molecular weight 190,000, molecular weight distribution 2.5, n:(n+m)=0.86) 70g, ABS 20g, acrylonitrile-styrene-acrylic acid terpolymer AS5M10g. Mix well and dry in vacuum at 80°C for 10 hours. In a twin-screw extruder, a blend of PCHC and ABS was obtained by banburying at 200° C. at a speed of 30 r / min.
[0023] The above blends were made into film tensile samples, and the tensile properties were tested. The Young's modulus is 1.3GPa, the tensile strength is 33.3MPa, the elongation at break is 4.0%, and the glass transition temperature is 121°C.
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technical field [0001] The invention relates to the field of macromolecules, in particular to a method for modifying a carbon dioxide-cyclohexene oxidecopolymer. Background technique [0002] Carbon dioxide-cyclohexene oxidecopolymer (PCHC) is an aliphatic polycarbonate synthesized by carbon dioxide-cyclohexene oxide copolymer. Compared with bisphenol A polycarbonate, aliphatic polycarbonate not only has a simple and non-toxic synthesis process, but also effectively utilizes a large amount of greenhouse gas that is harmful to the environment - carbon dioxide, and has biodegradability, which will not cause white pollution. It has good economic, social and environmental benefits. However, due to the low glass transition temperature of general aliphatic polycarbonates, which is close to room temperature, their application as engineering plastics is greatly limited, and they can only be used in the fields of coatings, adhesives, elastomers and low-temperature oxygen barrier f...
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