Improved properties by hydrogen bonding interaction of poly(lactic acid)/palygorskite nanocomposites for agricultural products packaging

Abstract

Poly(lactic acid) (PLA)/palygorskite (PA) nanocomposites were fabricated through melt blending. The significant finding by Fourier transformed infrared spectra and X‐ray photoelectron spectroscopy was that the hydrogen bonding interaction between PA surface and PLA matrix. Due to the hydrogen bonding interaction, the PA particles could be well dispersed and distributed in the PLA matrix, which had been further confirmed by scanning electron microscopy and transmission electron microscopy results. Therefore, PLA/PA nanocomposites revealed the significant improvements in tensile properties, resulting in the potential application for agricultural products packaging. Due to PA aggregates, the degree of hydrogen bonding decreased with the increasing content of PA in the matrix, and the appropriate PA content is 3% (by weight). POLYM. COMPOS., 35:468–476, 2014. © 2013 Society of Plastics Engineers

Electrospinning polymer blend of PLA and PBAT: Electrospinnability–solubility map and effect of polymer solution parameters toward application as antibiotic‐carrier mats

“…Specifically, the solvents with low to moderate polar forces could dissolve both PLA and PBAT. It was previously reported that hydrogen bonds and dispersion forces could be formed on the surfaces of PLA and PBAT . In this regard, both the polymers favored dissolution in solvents with strong hydrogen bond and dispersion force [Figure (a,b)].…”

Poly(lactic acid)/palygorskite nanocomposites: Enhanced the physical and thermal properties

“…In a previous work , we also found that adding PA nanoparticles could improve the mechanical properties due to the strong hydrogen bonding interactions between the PLA matrix and the PA surface. In this research, PA was introduced into the PLA matrix as a natural nucleating agent, which is a promising natural one‐dimensional filler for polymer matrix composites in recent years .…”

“…This study was a continuous work followed by our previous report , where the nanocomposites exhibited strong hydrogen bonding interactions and presented several improved properties. Therefore, we not only can master the behavior of PA on PLA crystallization, but also can better understand the results reported in our earlier work.…”