MilliporeSigma
  • Self-healing multilayer polyelectrolyte composite film with chitosan and poly(acrylic acid).

Self-healing multilayer polyelectrolyte composite film with chitosan and poly(acrylic acid).

Soft matter (2015-09-15)
Yanxi Zhu, Hongyun Xuan, Jiaoyu Ren, Liqin Ge
ABSTRACT

If self-healing materials can be prepared via simple technology and methods using nontoxic materials, this would be a great step forward in the creation of environmentally friendly self-healing materials. In this paper, the specific structural parameters of the various hydrogen bonds between chitosan (CS) and polyacrylic acid (PAA) were calculated. Then, multilayer polyelectrolyte films were fabricated with CS and PAA based on layer-by-layer (LbL) self-assembly technology at different pH values. The possible influence of pH on the (CS/PAA) × 30 multilayer polyelectrolyte film was investigated. The results show that the interactions between CS and PAA, swelling capacity, microstructure, wettability, and self-healing ability are all governed by the pH of the CS solution. When the pH value of the CS solution is 3.0, the prepared multilayer polyelectrolyte film (CS3.0/PAA2.8) × 30 has fine-tuned interactions, a network-like structure, good swelling ability, good hydrophilicity, and excellent self-healing ability. This promises to greatly widen the future applications of environmentally friendly materials and bio-materials.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Ethanol Fixative 80% v/v, suitable for fixing solution (blood films)
Supelco
Ethanol standards 10% (v/v), 10 % (v/v) in H2O, analytical standard
Sigma-Aldrich
Acetic acid, natural, ≥99.5%, FG
Sigma-Aldrich
Acetic acid, ≥99.5%, FCC, FG
Sigma-Aldrich
Acetic acid-12C2, 99.9 atom % 12C
Supelco
Ethanol solution, certified reference material, 2000 μg/mL in methanol
Sigma-Aldrich
5α-Androstan-17β-ol-3-one, ≥97.5%
Sigma-Aldrich
Acetic acid, for luminescence, BioUltra, ≥99.5% (GC)
Sigma-Aldrich
Ethyl alcohol, Pure, 190 proof, ACS spectrophotometric grade, 95.0%
Sigma-Aldrich
Ethyl alcohol, Pure, 190 proof, meets USP testing specifications
Sigma-Aldrich
Phenylacetic acid, 99%
Sigma-Aldrich
Acetic acid solution, suitable for HPLC
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, for molecular biology
Sigma-Aldrich
Acetic acid, glacial, puriss., meets analytical specification of Ph. Eur., BP, USP, FCC, 99.8-100.5%
Sigma-Aldrich
Acetic acid, glacial, puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.8%
Sigma-Aldrich
Ethanol, puriss. p.a., absolute, ≥99.8% (GC)
Sigma-Aldrich
Acetic acid, glacial, ≥99.99% trace metals basis
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, HPLC/spectrophotometric grade
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, ACS reagent, ≥99.5%
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, meets USP testing specifications
Sigma-Aldrich
Ethyl alcohol, Pure, 200 proof, anhydrous, ≥99.5%
Sigma-Aldrich
Phenylacetic acid, ≥99%, FCC, FG
Sigma-Aldrich
Acetic acid, glacial, ACS reagent, ≥99.7%
Sigma-Aldrich
Acetic acid, glacial, puriss., 99-100%
Sigma-Aldrich
Ethyl alcohol, Pure, 190 proof, for molecular biology
Sigma-Aldrich
Acetic acid, glacial, ReagentPlus®, ≥99%