Segmented bio-based polyurethane composites containing powdered cellulose obtained from novel bio-based diisocyanate mixtures

被引:6
|
作者
Glowinska, Ewa [1 ]
Kasprzyk, Paulina [1 ]
Datta, Janusz [1 ]
机构
[1] Gdansk Univ Technol, Dept Polymer Technol, G Narutowicza St 11-12, PL-80233 Gdansk, Poland
关键词
THERMOPLASTIC POLYURETHANES; CASTOR-OIL; MORPHOLOGY; NANOCOMPOSITE; POLYOLS; CHAINS; GLYCOL; NCO/OH; RATIO;
D O I
10.1007/s00226-021-01331-4
中图分类号
S7 [林业];
学科分类号
0829 ; 0907 ;
摘要
A considerable number of research works focus on the positive influence of cellulose on the properties of polymer-based composites and their wide range of application possibilities. The present work is focused on the synthesis of novel bio-based polyurethane (bio-PU) composites filled with powdered cellulose (microcellulose, MC) in an amount of 5 wt.%. Bio-PU composites were synthesized via a non-solvent prepolymer method. First, the prepolymer was synthesized from diisocyanate mixture based on hexamethylene diisocyanate and bio-based polyisocyanate Tolonate (TM) X Flo 100 and alpha,omega-oligo(ethylene-butylene adipate)diol which contained cellulose. Then, resulted prepolymer was extended by bio-based 1,4 butanediol (bio-BDO). Bio-PU composites were obtained with the different [NCO]/[OH] molar ratios: 0.95, 1.0, 105 and 1.1. Special attention was paid to the influence of MC on the phase separation between soft and hard segments of bio-PU by studying the chemical structure, morphology and thermal and mechanical properties of the prepared cellulose-based composites.
引用
收藏
页码:1673 / 1691
页数:19
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