TY - JOUR
T1 - Viscoelastic and Properties of Amphiphilic Chitin in Plasticised Polylactic Acid/Starch Biocomposite
AU - Olaiya, N. G.
AU - Maraveas, C.
AU - Salem, Mohamed A.
AU - Raja, S.
AU - Rashedi, Ahmad
AU - Alzahrani, Abdullah Y.
AU - El-Bahy, Zeinhom M.
AU - Olaiya, Funmilayo G.
N1 - Funding Information:
The authors acknowledge the support of the Deanship of Scientific Research at King Khalid University for funding this work under grant number (RGP.2/106/43) and Association of Commonwealth Universities (ACU) U.K.
PY - 2022/6/1
Y1 - 2022/6/1
N2 - The enhancement of the PLA thermomechanical properties is significant due to its suit-ability as a replacement for primary synthetic polymer use in diverse industrial production. The amphiphilic chitin was used as a compatibilizer in PLA/starch biocomposite. The properties of plasticised polylactic acid blended with starch, and amphiphilic chitin was studied for enhanced thermomechanical and viscoelastic properties. Chitin was modified using acetylated substitution reaction and blended with plasticised PLA/starch biocomposite. The biocomposite was prepared with combined compression and melt extrusion techniques. The biocomposite’s thermomechani-cal, thermal, mechanical, and morphological properties were studied using dynamic mechanical analysis, TGA-DSC, tensile test, and scanning electron microscopy. The storage and loss modulus were significantly enhanced with increased amphiphilic chitin content. Similarly, the single peak of tan delta showed good miscibility of the polymeric blend. Additionally, the modulus increases with frequency change from 1 Hz to 10 Hz. The thermal stability of the biocomposite was observed to be lower than the neat PLA. The tensile properties of the biocomposite increased significantly more than the neat PLA, with P4S4C having the highest tensile strength and modulus of 87 MPa and 7600 MPa. The SEM images show good miscibility with no significant void in the fractured surface. The viscoelastic properties of PLA were enhanced considerably with plasticizer and amphiphilic chitin with improved biodegradability. The properties of the biocomposite can be adapted for various industrial applications.
AB - The enhancement of the PLA thermomechanical properties is significant due to its suit-ability as a replacement for primary synthetic polymer use in diverse industrial production. The amphiphilic chitin was used as a compatibilizer in PLA/starch biocomposite. The properties of plasticised polylactic acid blended with starch, and amphiphilic chitin was studied for enhanced thermomechanical and viscoelastic properties. Chitin was modified using acetylated substitution reaction and blended with plasticised PLA/starch biocomposite. The biocomposite was prepared with combined compression and melt extrusion techniques. The biocomposite’s thermomechani-cal, thermal, mechanical, and morphological properties were studied using dynamic mechanical analysis, TGA-DSC, tensile test, and scanning electron microscopy. The storage and loss modulus were significantly enhanced with increased amphiphilic chitin content. Similarly, the single peak of tan delta showed good miscibility of the polymeric blend. Additionally, the modulus increases with frequency change from 1 Hz to 10 Hz. The thermal stability of the biocomposite was observed to be lower than the neat PLA. The tensile properties of the biocomposite increased significantly more than the neat PLA, with P4S4C having the highest tensile strength and modulus of 87 MPa and 7600 MPa. The SEM images show good miscibility with no significant void in the fractured surface. The viscoelastic properties of PLA were enhanced considerably with plasticizer and amphiphilic chitin with improved biodegradability. The properties of the biocomposite can be adapted for various industrial applications.
KW - amphiphilic
KW - biocomposite
KW - filler
KW - plasticiser
KW - viscoelastic
UR - http://www.scopus.com/inward/record.url?scp=85131738292&partnerID=8YFLogxK
U2 - 10.3390/polym14112268
DO - 10.3390/polym14112268
M3 - Article
AN - SCOPUS:85131738292
SN - 2073-4360
VL - 14
SP - 1
EP - 24
JO - Polymers
JF - Polymers
IS - 11
M1 - 2268
ER -