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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 1996.1
- 수록면
- 104 - 110 (7page)
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초록· 키워드
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The polyurethane was synthesized by the reaction of polycaprolactone diol(Mw 2000), 4,4'-diphenylmethane diisocyanate and 1,4-butanediol as the chain extender. Also, the modified polyurethane polymers based on liquid polybutadiene as a part of soft segment and dimethylolpropionic acid as a chain extender, giving polyurethane with various polarity, were synthesized. The thermal, mechanical, adhesion properties and water contact angles of the polyurethanes were examined. From the result of the water contact angle, the polarity of the acid modified PU containing 6% acid content was unchanged but mechanical and adhesion properties were improved. The water contact angles on polybutadiene modified PU films were increased with increasing polybutadiene content. The mechanical properties of the polybutadiene modified PU were higher than that of acid modified PU. However, the mechanical properties were reduced as polybutadiene content increased. The result is presumably due to phase separation between hard segment and soft segment. The peel strength of the polyurethane introduced with 5wt% polybutadiene was improved about 150% than that of unmodified PU. The same as the mechanical properties, the more polybutadiene was introduced, the lower peel strength was obtained.
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Bacterial Adhesion on Modified Polyurethanes (Ⅲ)
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Bacterial Adhesion on modified Polyurethanes
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1995 .10
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Characterization and Mechanical Properties of Prepolymer and Polyurethane Block Copolymer with a Shape Memory Effect
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