Synthesis and Characterization of Bio-Based Poly(amide imide)s Derived from 11-Aminoundecanoic Acid and 1,10-Diaminodecane
JOURNAL OF BIOBASED MATERIALS AND BIOENERGY(2022)
摘要
Three diimide diacid (DIDA) monomers possessing different rigid groups (phenyl, biphenyl and diphenyl ether group) between two imide rings were prepared through the dehydration cycliza-tion reaction of 11-aminoundecanoic acid and aromatic dianhydride. These DIDA monomers were polymerized with 1,10-diaminodecane to produce bio-based poly(amide imide)s (PAIs) by the eco-friendly and low-cost two-step polymerization method. All the PAIs have high thermal stabilities, and their initial thermal decomposition temperatures are above 400 degrees C at 5% weight loss. When the rigid group between two imide rings is changed from phenyl to diphenyl ether group, the glass transition temperature of PAI shows a decreasing trend from 54.7 degrees C to 42.4 degrees C, the tensile strength also reduces from 62.4 MPa to 49.5 MPa, but elongation at break increases from 3.7% to 6.8%. Moreover, the PAI with phenyl group between two imide rings is a semicrystalline polymer, while the PAI with biphenyl or diphenyl ether group is an amorphous polymer. It is a viable way to regulate the properties of PAIs by changing the structure of rigid group between two imide rings. Such bio-based IP: 49.249.253.194 On: Fri, 12 Aug 2022 06:52:26 PAIs with high thermal stabilities,low glass transition temperatreand good mechanical strength Copyright: American Scientific Publis hers will provide great promise for their wider applications.
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关键词
Bio-Based, Poly(amide imide)s, 11-Aminoundecanoic Acid, 1, 10-Diaminodecane
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