Synthesis of bio-polyurethanes with isosorbide and propanediol based poly(lactic acid) diol

被引：7
作者：
Silva, Ingridy Dayane dos Santos [1 ,2 ,6 ]
Albuquerque, Ananda [1 ]
Boskamp, Laura [3 ]
Ries, Andreas [4 ]
Haag, Katharina [3 ]
Koschek, Katharina [3 ]
Wellen, Renate [5 ]
机构：
[1] Univ Fed Campina Grande, Acad Unit Mat Engn, Campina Grande, Brazil
[2] Fraunhofer Inst Environm, Safety & Energy Technol UMSICHT, Oberhausen, Germany
[3] Fraunhofer Inst Mfg Technol & Adv Mat, Dept Polymer Mat & Mech Engn, Bremen, Germany
[4] Natl Univ Asuncion, Multidisciplinary Ctr Technol Invest, San Lorenzo Univ Campus, San Lorenzo, Paraguay
[5] Univ Fed Paraiba, Mat Engn Dept, Joao Pessoa, Brazil
[6] Univ Fed Campina Grande, Acad Unit Mat Engn, BR-58249140 Campina Grande, Brazil
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2023年 / 140卷 / 11期
关键词：
biobased isocyanate polyurethane; Isosorbide; poly(lactic acid) diol; KINETICS;
D O I：
10.1002/app.53623
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Synthesis of bio-polyurethane (Bio-PU) using isosorbide (ISO) and poly(lactic acid) (PLA) diols, (propanediol based poly(lactic acid) (PLAP) and PLA esterified with Soybean oil (PLASO)) and pentamethylene (PDI) isocyanate were performed. Crosslinked Bio-PUs were obtained, and the details of the curing kinetics were determined via Fourier transform infrared spectroscopy (FTIR) spectra and differential scanning calorimetry ( DSC). Distinct curing behaviors between Bio-PUs with different PLA diol formulations were observed. The addition of PLAP and PLASO increased the curing conversion at approximately 460% higher than Bio-PU without PLA content, as verified by FTIR. The curing peak temperature (T-p) of Bio-PUs with PLAP ranged from 94 to 163 degrees C, while for PLASO T-p was 132- 175 degrees C. Bio-PUs based on PLA diols displayed lower activation energy ( Ea) during curing as demonstrated using Friedman model, and higher thermal stability as evidenced through thermogravimetric analyses. Reported data offer reliable tools to evaluate the best rote to synthesize biobased polyurethane and manipulate the degree of crosslinking based on composition and processing conditions, allowing product processing to the desired application.
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页数：15
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