TY - JOUR
T1 - Viscoelastic properties and thermal stability of nanohydroxyapatite reinforced poly-lactic acid for load bearing applications
AU - Michael, Feven Mattews
AU - Khalid, Mohammad
AU - Raju, Gunasunderi
AU - Ratnam, Chantara Thevy
AU - Walvekar, Rashmi
AU - Mubarak, Nabisab Mujawar
PY - 2021/9/27
Y1 - 2021/9/27
N2 - We studied the reinforcing effects of treated and untreated nanohydroxyapatite (NHA) on poly-lactic acid (PLA). The NHA surface was treated with three different types of chemicals; 3-aminopropyl triethoxysilane (APTES), sodium n-dodecyl sulfate (SDS) and polyethylenimine (PEI). The nanocomposite samples were prepared using melt mixing techniques by blending 5 wt% untreated NHA and 5 wt% surface-treated NHA (mNHA). Based on the FESEM images, the interfacial adhesion between the mNHA filler and PLA matrix was improved upon surface treatment in the order of mNHA (APTES) > mNHA (SDS) > mNHA (PEI). As a result, the PLA-5wt%mNHA (APTES) nanocomposite showed increased viscoelastic properties such as storage modulus, damping parameter, and creep permanent deformation compared to pure PLA. Similarly, PLA-5wt%mNHA (APTES) thermal properties improved, attaining higher Tc and Tm than pure PLA, reflecting the enhanced nucleating effect of the mNHA (APTES) filler.
AB - We studied the reinforcing effects of treated and untreated nanohydroxyapatite (NHA) on poly-lactic acid (PLA). The NHA surface was treated with three different types of chemicals; 3-aminopropyl triethoxysilane (APTES), sodium n-dodecyl sulfate (SDS) and polyethylenimine (PEI). The nanocomposite samples were prepared using melt mixing techniques by blending 5 wt% untreated NHA and 5 wt% surface-treated NHA (mNHA). Based on the FESEM images, the interfacial adhesion between the mNHA filler and PLA matrix was improved upon surface treatment in the order of mNHA (APTES) > mNHA (SDS) > mNHA (PEI). As a result, the PLA-5wt%mNHA (APTES) nanocomposite showed increased viscoelastic properties such as storage modulus, damping parameter, and creep permanent deformation compared to pure PLA. Similarly, PLA-5wt%mNHA (APTES) thermal properties improved, attaining higher Tc and Tm than pure PLA, reflecting the enhanced nucleating effect of the mNHA (APTES) filler.
KW - effectiveness
KW - nanocomposites
KW - nanohydroxyapatite
KW - poly-lactic acid
KW - thermal stability
KW - viscoelastic properties
U2 - 10.3390/molecules26195852
DO - 10.3390/molecules26195852
M3 - Article
C2 - 34641395
AN - SCOPUS:85116125693
SN - 1420-3049
VL - 26
JO - Molecules
JF - Molecules
IS - 19
M1 - 5852
ER -