Peach gum polysaccharide polyelectrolyte: preparation, properties and application in layer-by-layer self-assembly
writer：Jiachang Huang, Li Zhou*
keywords：Peach gum，polysaccharide，polyelectrolyte; responsiveness，layer-by-layer self-assembly.
source：期刊
specific source：Carbohydr. Polym. 2014, 113, 373-379
Issue time：2014年
The hydrolysed
peach gum polysaccharide
(HPGP) prepared at acidic condition is investigated as an anionic
polyelectrolyte for the first time. A hydrolysis mechanism
is proposed by monitoring the hydrolysis efficiency and morphological change of
crude peach gum, and the intrinsic viscosity of resulted HPGP as a function of
hydrolysis time. Fourier
transform infrared (FTIR) spectroscopy and ζ-potential
measurements reveal that HPGP with multiple carboxylic groups is negatively
charged in water in the pH range 3-11. The HPGP exhibits remarkable pH and ionic strength responsiveness, as proven by dynamic light scattering (DLS) and atomic force microscopy
(AFM) measurements. Moreover, the layer-by-layer (LbL) self-assembly experiments further
confirmed that the HPGP can be utilized as an anionic
polyelectrolyte. Considering the facile availability, favorable compatibility and
intriguing functionality of HPGP, this study opens up enormous
opportunities for the large-scale utilization of peach gum resource.