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https://irlib.pccu.edu.tw/handle/987654321/44657
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| 題名: | Synthesis and Physical Properties of Non-Crystalline Nylon 6 Containing Dimer Acid |
| 作者: | Huang, CN (Huang, Ching-Nan)
Wu, CM (Wu, Chang-Mou)
Lo, HW (Lo, Hao-Wen)
Lai, CC (Lai, Chiu-Chun)
Teng, WF (Teng, Wei-Feng)
Liu, LC (Liu, Lung-Chang)
Chen, CM (Chen, Chien-Ming) |
| 貢獻者: | 紡織工程學系 |
| 關鍵詞: | TRANSPARENT POLYAMIDES
AMORPHOUS POLYAMIDES
CRYSTALLIZATION
BEHAVIOR |
| 日期: | 2019 |
| 上傳時間: | 2019-06-25 14:34:17 (UTC+8) |
| 摘要: | In this study, a long carbon chain dimer acid is introduced into a nylon 6 structure and is copolymerized with different structural amines to produce amorphous nylon 6 by 4,4'-methylenebis(2-methylcyclohexylamine) (MMCA) in different copolymerization ratios. The effect of different structures and copolymerization ratios on the properties of nylon 6 is determined, along with the thermal properties, crystallinity, water absorption, dynamic mechanical properties, and optical properties. It is found that the melting point and the thermal cracking temperature Td10 of nylon 6 are respectively between 176 degrees C and 213 degrees C and 378 degrees C to 405 degrees C. The effect of introducing a bicyclohexane group containing a methyl side chain is greater than that of a meta-benzene ring, so COMM (synthesized by Caprolactam (C), dimer oleic acid (OA), and 4,4'-Methylenebis(2-methylcyclohexylamine) (MMCA)) has the lowest melting point, enthalpy, and crystallinity. As the copolymerization ratio increases, its thermal properties decrease. 10% is the lowest crystallinity. The amine structure containing a bicycloalkyl group has lower water absorption and a 10% copolymerization ratio gives the lowest water absorption. It contains the bicycloalkyl group, COM (synthesized by Caprolactam (C), dimer oleic acid (OA) and 4,4'-Methylenebis(cyclohexylamine) (MCA)), which has the highest loss modulus. The lowest loss modulus is noted for a copolymerization ratio of 7% and the value of tan delta increases as the copolymerization ratio increases. The introduction of nylon 6 with the bicycloalkyl groups, COMM and COM, significantly increases transparency. As the copolymerization ratio increases, the transparency increases and the haze decreases. The best optical properties are achieved for 10% copolymerization. |
| 關聯: | Polymers 2019, 11(2), 386 |
| 顯示於類別: | [紡織工程學系] 期刊論文
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