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Effect of MMT Clay on Mechanical, Thermal and Barrier Properties of Treated Aloevera Fiber/ PLA-Hybrid Biocomposites

  • P. RameshEmail author
  • B. Durga Prasad
  • K. L. Narayana
Original Paper


In this research, the PLA- biocomposite and PLA- hybrid biocomposites were prepared with twin screw extruder, two-roll mill, and compression molding method. The PLA based bio-composites are fabricated with 30% of treated aloevera fiber and 0, 1, 2 and 3 wt% nanoclay filler. The influence of MMT clay on thermal, mechanical and barrier properties of PLA-biocomposite and PLA-hybrid biocomposites has been studied. The PLA-hybrid biocomposites thermal, mechanical and water resistance properties are increased with adding of MMT clay. However, 1 wt.% MMT included PLA-hybrid biocomposites exhibits increased tensile, flexural, impact and abrasion resistance properties than PLA- biocomposite, the improvements 5.72, 6.08, 10.43, and 45.71% respectively are observed. The PLA-bio and hybrid biocomposites showed higher tensile modules 25.76, 18.84, 31.53 and 32.30% respectively, and flexural modules 61.42, 60.95, 66.66 and 79.04% respectively, than pure- PLA. The results TGA analysis depicted that inclusion of MMT clay can improve the decomposition temperature of the PLA-biocomposites. The addition of 3 wt.% MMT clay can improve the PLA- biocomposite decomposition temperature from 295 to 299o C in T 10% likewise 338 to 350o C in T 75%. SEM analysis discloses that, MMT clay not only improves micro-structure and also it acts as a load transfer mechanism. The Physical barrier properties and biodegradability results show that water resistance of biocomposites improved and biodegradability decreased due to adding of MMT clay.


Polylactic acid Aloevera fiber NaOH treatment Montmorillonite clay Thermo- mechanical Physical barrier and biodegradability properties 


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© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Research Scholar, JNTUAAnanthapuramuIndia
  2. 2.Mechanical Engineering DepartmentJNT UniversityAnanthapuramuIndia
  3. 3.Mechanical Engineering DepartmentSVCETChittoorIndia

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