Synthesis of PBAT through transesterification with discarded PET

doi:10.19491/j.issn.1001-9278.2022.09.015

Abstract

Abstract:

Poly（ethylene terephthalate⁃co⁃butylene adipate）（PBAT） was prepared through transesterification using waste poly（ethylene terephthalate）（PET） as a raw material. The structure and compositions of the PBAT products were determined by nuclear magnetic resonance and infrared spectroscopy， and their thermal properties were investigated using TGA and DSC. The contact angle of PBAT was measured by a five⁃point method， and their tensile properties were measured using a universal test machine. The results indicated that there was no thermal decomposition occurring below 300 ºC for the PBAT products. This is an indication of good heat resistance. The PBAT developed in this work exhibited a contact angle of 78.54º， indicating a good hydrophilic nature. Moreover， the PBAT presented elongation at break of over 900 %， indicating a good application potential.

Key words: discarded poly（ethylene terephthalate）, poly（terephthalic acid?co?adipic acid?co?butylene glycol）, transesterification method

CLC Number:

TQ325

LI Menglu, SU Tingting, WANG Zhanyong. Synthesis of PBAT through transesterification with discarded PET[J]. China Plastics, 2022, 36(9): 105-110.

Figures/Tables 8

References 20

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波数/cm^-1	吸收峰类型
3 000	苯环上C—H的伸缩振动峰
1 509	苯环骨架振动峰
900~700	反映苯环的存在
1 104	芳香基上相邻两个H面内弯曲振动吸收峰
934	反式C—O对称伸缩振动峰
2 948	—CH₂—上C—H键不对称伸缩振动峰
2 890	—CH₂—上C—H键对称伸缩振动峰
1 462	—CH₂—上C—H键反对称弯曲振动峰
1 712	C=O收缩振动峰

波数/cm^-1	吸收峰类型
3 000	苯环上C—H的伸缩振动峰
1 509	苯环骨架振动峰
900~700	反映苯环的存在
1 104	芳香基上相邻两个H面内弯曲振动吸收峰
934	反式C—O对称伸缩振动峰
2 948	—CH₂—上C—H键不对称伸缩振动峰
2 890	—CH₂—上C—H键对称伸缩振动峰
1 462	—CH₂—上C—H键反对称弯曲振动峰
1 712	C=O收缩振动峰

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