Isolation of Microcrystalline Cellulose from Wood and Fabrication of Polylactic Acid(PLA)Based Green Biocomposites  

作　　者：Selwin Maria Sekar Rajini Nagarajan Ponsuriyaprakash Selvakumar Ismail Sikiru Oluwarotimi Kumar Krishnan Faruq Mohammad Mohammed Rafi Shaik Nadir Ayrilmis 

机构地区：[1]Department of Mechanical Engineering,Kalasalingam Academy of Research and Education,Krishnankoil,626126,India [2]Department of Mechanical Engineering,SSM Institute of Engineering and Technology,Dindigul,624002,India [3]Department of Engineering,Centre for Engineering Research,School of Physics,Engineering and Computer Science,University of Hertfordshire,Hatfield,AL109AB,UK [4]INTI International University,Persiaran Perdana BBN,Nilai,71800,Malaysia [5]Department of Chemistry,College of Science,King Saud University,P.O.Box 2455,Riyadh,11451,Kingdom of Saudi Arabia [6]Department of Wood Mechanics and Technology,Faculty of Forestry,Istanbul University–Cerrahpasa,Bahcekoy,Sariyer,Istanbul,34473,Turkey

出　　处：《Journal of Renewable Materials》2024年第8期1455-1474,共20页可再生材料杂志（英文）

基　　金：funding from Researchers Supporting Project Number(RSP2024R355),King Saud University,Riyadh,Saudi Arabia.

摘　　要：An innovative microcrystalline cellulose(MCC)natural fibre powder-reinforced PLA biocomposite was investigated using the hand lay-up technique.The polymer matrix composite(PMC)samples were prepared by varying the weight percentages(wt.%)of both PLA matrix and MCC reinforcement:pure PLA/100:0,90:10,80:20,70:30,60:40 and 50:50 wt.%,respectively.From the results obtained,MCC powder,with its impressive aspect ratio,proved to be an ideal reinforcement for the PLA,exhibiting exceptional mechanical properties.It was evident that the 80:20 wt.%biocomposite sample exhibited the maximum improvement in the tensile,flexural,notched impact,compressive strength and hardness by 28.85%,20.00%,91.66%,21.53%and 35.82%,respectively compared to the pure PLA sample.Similarly,during the thermogravimetric analysis(TGA),the same 80:20 wt.%biocomposite sample showed a minimum weight loss of 20%at 400℃,among others.The morphological study using Field Emission Scanning Electron Microscopy(FE-SEM)revealed that the uniform distribution of cellulose reinforcement in the PLA matrix actively improved the mechanical properties of the biocomposites,especially the optimal 80:20 wt.%sample.Importantly,it was evident that the optimal PLA/cellulose biocomposite sample could be a suitable and alternative sustainable,environmentally friendly and biodegradable material for semi/structural applications,replacing synthetic and traditional components.

关 键 词：Polylactic acid micro crystalline cellulose BIOCOMPOSITE CHARACTERIZATIONS FESEM environmental pollution 

分 类 号：TB33[一般工业技术—材料科学与工程]