Physical properties of plasticized PLA/HNTs bionanocomposites: effects of plasticizer type and content

1st International Conference on Mechanical Electronic and Biosystem Engineering

Alakrach, Abdulkader M.^1 ; Noriman, N.Z.^1 ; Dahham, Omar S^1 ; Al-Rashdi, Awad A.^2 ; Johari, I.^3 ; Razlan, Z.M.^4 ; Shahriman, A.B.^4 ; Zunaidi, I.^5 ; Khairunizam, Wan^4

Center of Excellence Geopolymer and Green Technology (CEGeoGTech), Faculty of Engineering Technology (FETech), Universiti Malaysia Perlis (UniMAP), P.O.Box, D/A Pejabat Pos Besar, Kangar, Perlis

01000, Malaysia^1

Chemistry Department, Umm Al-Qura University, Al-qunfudah University College, Al-qunfudah Center for Scientific Research (QCSR), Saudi Arabia^2

School of Civil Engineering, Engineering Campus, Universiti Sains Malaysia, Penang, Malaysia^3

School of Mechatronic Engineering, Universiti Malaysia Perlis (UniMAP), Pauh Putra Campus, Perlis Arau

02600, Malaysia^4

Faculty of Technology, University of Sunderland, St Peter's Campus, SR6 0DD, Sunderland, United Kingdom^5

关键词: Bionanocomposite films;    Functional properties;    Halloysite nanotube (HNTs);    Hydrophilic and hydrophobic properties;    Moisture sensitivity;    Polymer nanocomposite;    Solution-casting method;    Water vapor permeability;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/557/1/012067/pdf
DOI  :  10.1088/1757-899X/557/1/012067

来源: IOP

【 摘 要 】

Halloysite nanotubes (HNTs) reinforced polylactic acid (PLA) nanocomposite films were utilized for different applications, such as packaging, drug recover and other applications. The incorporation of plasticizer into polymer nanocomposites modifies some of their functional and physical properties, such as increasing flexibility, moisture sensitivity, in addition to other functional properties. However, the effects of Polyethylen glycol (PEG) and sesame oil (SO) on selected physical properties (moisture content (MC), contact angle (CA) and water vapor permeability (WVP)) of PLA)/HNTs bionanocomposite films were examined. The plasticized PLA/HNTs (5 wt % HNTs loading) bionanocomposite films were prepared using the solution casting method at room temperature. The concentrations of each plasticizer that used indivisually were (0, 10, 20 and 30 wt %). Results show that the increasing of PEG content led to increase in moisture content and water vapor permeability and decrease in contact angle of the films. On the contrary, the increasing of SO levels led to decrease in moisture content and water vapor permeability and increase in contact angle of the films. Differences in measured physical properties of films with plasticizer type and concentration may be attributed to differences in the hydrophilic and hydrophobic properties of the plasticizers. SO was the plasticizer that showed the most interested effect (low moisture content and water vapor permeability) on PLA/HNTs films for food packaging applications compared to PEG.