Preparation and oil absorption performance of biodegradable PCL/PLA open-cell foam material

LI Zihui; JIANG Jing; JIN Zhangyong; CAI Bozhi; CAO Yongjun; LI Qian

doi:10.11949/0438-1157.20200627

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Preparation and oil absorption performance of biodegradable PCL/PLA open-cell foam material

Material science and engineering\, nanotechnology | 更新时间：2026-07-24

- Preparation and oil absorption performance of biodegradable PCL/PLA open-cell foam material
- CIESC Journal Vol. 71, Issue 12, Pages: 5842-5853(2020)
- 作者机构：
  
  1.郑州大学力学与安全工程学院，微纳成型技术国家级国际联合研究中心，河南郑州 450001
  2.郑州大学机械与动力工程学院，河南郑州 450001
  3.郑州大学材料科学与工程学院，河南郑州 450001
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20200627
  CLC： TQ 028.8
- Received：21 May 2020，
  
  Revised：2020-06-30，
  
  Online First：17 December 2020，
  
  Published：05 December 2020
- 稿件说明：
移动端阅览
李子辉, 蒋晶, 金章勇, 蔡泊志, 曹永俊, 李倩. 生物可降解PCL/PLA开孔发泡材料制备及吸油性能[J]. 化工学报, 2020, 71(12): 5842-5853

LI Zihui, JIANG Jing, JIN Zhangyong, CAI Bozhi, CAO Yongjun, LI Qian. Preparation and oil absorption performance of biodegradable PCL/PLA open-cell foam material[J]. CIESC Journal, 2020, 71(12): 5842-5853
李子辉, 蒋晶, 金章勇, 蔡泊志, 曹永俊, 李倩. 生物可降解PCL/PLA开孔发泡材料制备及吸油性能[J]. 化工学报, 2020, 71(12): 5842-5853 DOI： 10.11949/0438-1157.20200627.

LI Zihui, JIANG Jing, JIN Zhangyong, CAI Bozhi, CAO Yongjun, LI Qian. Preparation and oil absorption performance of biodegradable PCL/PLA open-cell foam material[J]. CIESC Journal, 2020, 71(12): 5842-5853 DOI： 10.11949/0438-1157.20200627.

摘要

以聚己内酯（PCL）为基体，添加不同含量聚乳酸（PLA）熔融共混制备具有不同分散相形态的PCL/PLA共混物，利用超临界二氧化碳（scCO

）微孔发泡工艺制备不同发泡倍率和开孔率的PCL/PLA多孔材料用于吸油应用。针对边长3 mm正方体样品溶解度实验发现100 min后CO

在PCL中已达到饱和吸附状态。PLA分散相含量的增加显著增大了PCL/PLA共混物泡孔密度，并使共混泡孔尺寸减小且分布更加均匀；发泡温度升高6℃，泡孔尺寸增大50%，发泡倍率增大38%，开孔率减小了20%。PCL/PLA开孔材料具有明显的亲油疏水性，发泡倍率越高，疏水性越好；针对花生油和硅油的吸油实验发现材料吸油率与发泡倍率和开孔率整体呈正比，实际吸油量高于理论计算值，10次循环吸油测试后样品吸油率仅降低8.5%，材料吸油量与油品特性黏度关系不大。

Abstract

In this paper

various polycaprolactone/polylactide (PCL/PLA) blends with different dispersed phase morphologies were melt blended based on PCL matrix. Supercritical carbon dioxide (scCO

) was used as physical blowing agent to fabricate porous PCL/PLA samples with different expansion ratio and open-cell content by microcellular batch foaming process. According to the solubility experiment of a cube sample with a side length of 3 mm

it is found that CO

has reached a saturated adsorption state in PCL after 100 min. The foam tests showed that with the increase of PLA contents

the pore size was decreased

the pore density was increased

and the pore distribution was more uniform. With the foaming temperature increased by 6℃

the pore size increased by 50%

the expansion ratio increased by 38% and the open-cell content decreased by 20%. PCL/PLA open-cell material has obvious lipophilic and hydrophobic properties. The higher the foaming ratio

the better the hydrophobicity properties. The oil absorption experiments for peanut oil and silicone oil showed that the oil absorption rate of

foamed samples was proportional to the overall expansion ratio and open-cell content. In addition

the actual oil absorption was higher than calculated theoretical values. After 10 cycles of oil absorption test

the oil absorption of porous PCL/PLA samples was only reduced by 8.5%

and the oil absorption had little relationship with the oil

􀆳

s intrinsic viscosity.

关键词

Keywords

references

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