首页> 外文会议>Technical Conference of the Society of Plastics >MELT COMPOUNDING OF POLY (3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE) (PHBV) / NANOFIBRILLATED CELLULOSE (NFC) NANOCOMPOSITES: PROPERTIES AND SOLUBILITY OF CARBON DIOXIDE
【24h】

MELT COMPOUNDING OF POLY (3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE) (PHBV) / NANOFIBRILLATED CELLULOSE (NFC) NANOCOMPOSITES: PROPERTIES AND SOLUBILITY OF CARBON DIOXIDE

机译:聚(3-羟基丁酸酯-CO-3-羟基戊戊烷)(PHBV)/纳米纤维纤维素(NFC)纳米复合材料的熔融配合:二氧化碳的性能和溶解度

获取原文
获取外文期刊封面目录资料

摘要

Biodegradable nanocomposites were prepared using nanofibrillated cellulose (NFC) as the reinforcement and poly (3-hydroxybutyrate-co-3-hydroxyvalerate, PHBV) as the polymer matrix. PHBV powder was dispersed in water, mixed with an aqueous suspension of NFC fiber, and freeze dried. The resulting PHBV/15 wt% NFC was then used as a masterbatch in a subsequent melt compounding process to produce nanocomposites of various formulations. Its properties, such as mechanical properties, crystallization behavior and solubility of carbon dioxide (CO2), were evaluated. Scanning electron microscopy (SEM) images revealed that individual fibers with diameters less than 1 um were still clearly distinguishable even though some of the NFC agglomerated. Adding NFC increased the tensile modulus of the PHBV/NFC nanocomposites nearly twofold. Differential scanning calorimetry (DSC) analysis showed that the NFC served as a nucleating agent, promoting the early onset of crystallization. However, high NFC content also led to greater thermal degradation of the PHBV matrix. The solubility of CO2 in the PHBV/NFC nanocomposites decreased and the desorption diffusivity increased as more NFC was added.
机译:使用纳米纤化纤维素(NFC)制备可生物降解的纳米复合材料作为增强剂和聚(3-羟基丁酸酯-CO-3-羟基戊烯,PHBV)作为聚合物基质。将PHBV粉末分散在水中,与NFC纤维的水性悬浮液混合,并冷冻干燥。然后将得到的PHBV / 15wt%NFC用作随后的熔体配混过程中的母料,以产生各种制剂的纳米复合材料。评估其性质,例如机械性能,结晶行为和二氧化碳(CO2)的溶解度。扫描电子显微镜(SEM)图像显示,即使一些NFC凝聚,仍然明显明显区分。添加NFC增加了PHBV / NFC纳米复合材料的拉伸模量接近双重。差分扫描量热法(DSC)分析表明,NFC用作成核剂,促进结晶早期发作。然而,高NFC含量也导致PHBV矩阵的热劣化。 CO 2在PHBV / NFC纳米复合材料中的溶解度降低,并且加入了吸附扩散率随着更多NFC而增加。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号