Preparation and Properties of Bamboo Flour/Polylactic Acid Biocomposites Toughened with Acetyl Tributyl Citrate

Xin-huai GONG; Zhong-hao DAI; Sheng-yun ZHAO; Zhao-li WANG; Li-qing QIU; Cheng-hui CHEN

doi:10.14028/j.cnki.1003-3726.2017.11.008

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Preparation and Properties of Bamboo Flour/Polylactic Acid Biocomposites Toughened with Acetyl Tributyl Citrate

更新时间：2022-09-06

- Preparation and Properties of Bamboo Flour/Polylactic Acid Biocomposites Toughened with Acetyl Tributyl Citrate
- Polymer Bulletin Vol. 30, Issue 11, Pages: 67-73(2017)
- 作者机构：
  
  1.武夷学院生态与资源工程学院，福建省竹材工程技术研究中心，武夷山 354300
  2.华侨大学材料科学与工程学院，环境友好功能材料教育部工程研究中心，厦门 361021
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2017.11.008
  CLC：
- Published：01 November 2017，
  
  Received：20 December 2016，
  
  Revised：03 May 2017，
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Xin-huai GONG, Zhong-hao DAI, Sheng-yun ZHAO, Zhao-li WANG, Li-qing QIU, Cheng-hui CHEN. Preparation and Properties of Bamboo Flour/Polylactic Acid Biocomposites Toughened with Acetyl Tributyl Citrate. [J]. Polymer Bulletin 30(11):67-73(2017)
DOI：

Xin-huai GONG, Zhong-hao DAI, Sheng-yun ZHAO, Zhao-li WANG, Li-qing QIU, Cheng-hui CHEN. Preparation and Properties of Bamboo Flour/Polylactic Acid Biocomposites Toughened with Acetyl Tributyl Citrate. [J]. Polymer Bulletin 30(11):67-73(2017) DOI： 10.14028/j.cnki.1003-3726.2017.11.008.

摘要

以竹粉（bamboo flour， BF)为生物质填料，乙酰柠檬酸丁酯（acetyl tributyl citrate， ATBC)为增韧剂，通过与聚乳酸(polylactic acid， PLA)熔融共混制备了 BF/PLA增韧复合材料，并采用红外光谱、热重分析、转矩流变仪、扫描电镜及力学性能测试等考察了 ATBC添加对BF/PLA复合材料结构与性能的影响。结果表明，ATBC可改善BF/PLA复合材料的加工流变性，降低复合材料玻璃化转变温度、冷结晶温度及熔融温度，但对复合材料的热稳定性没有影响。FTIR分析显示，ATBC的加入可使BF/PLA复合材料C—O红外吸收峰位增大，表明ATBC与PLA之间存在一定相互作用。当ATBC用量为15%时，BF/PLA复合材料断裂伸长率由增韧前的8. 1%增加到35. 6%，提高了 339. 5%。SEM图片显示，此时复合材料断面粗糙，表现出韧性断裂形貌。该研究结果可为进一步探索增韧竹纤维／聚乳酸复合材料制备及应用，提供试验数据和理论参考。

Abstract

The toughened bamboo flour/polylactic acid(BF/PLA) composites were manufactured by a melt blending method with acetyl tributyl citrate (ATBC) as plasticizers to improve the ductility of BF/PLA blends. Fourier infrared absorption spectroscopy (FTIR )

thermogravimetric analysis (TGA )

torque rheometer (TR )

scanning electronic microscopy(SEM) and mechanical test were adopted to study the addition of ATBC on the structure and properties of BF/ PLA biocomposites. The results showed that the addition of ATBC lead to an improvement in processing rheological properties and an reduction in glass transition

cold crystallization and melting temperature

but no Influence on the thermal stabilities of BF/PLA composites. The interaction between ATBC and PLA was confirmed by a small shift of C—O stretching peak in IR spectrum. The toughened BF/PLA composites with 15% content of ATBC showed an elongation at break up to 35. 6%

which was increased by 339. 5% compared with the BF/PLA composite without ATBC

and the fracture surface morphology was much rough and proved to be a typical tough fracture by SEM images at this condition.

关键词

聚乳酸竹粉生物质复合材料增韧乙酰柠檬酸丁酯

Keywords

Poly(lactic acid)Bamboo flourBiocompositesTougheningAcetyl tributyl citrate

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