Study on the Graft Reaction of Poly(propylene) Fiber with Acrylic Acid

Abstract

Summary: In this paper, the graft of poly(propylene) fiber with acrylic acid is investigated. The effects of grafting temperature, monomer concentration, and grafting time on the grafting degree of acrylic acid onto poly(propylene) fiber are discussed. In contrast to the conventional method of determining the grafting degree gravimetrically, the acid‐base titration method used in this paper was more efficient, even at low grafting degree. High‐performance liquid chromatography (HPLC) was used to estimate the averaged length of the grafted poly(acrylic acid) chains on each grafted site of poly(propylene) backbone. And also a mechanism for the grafting polymerization is proposed.Possible microstructures of two PP‐g‐AA samples at the same grafting degree.imagePossible microstructures of two PP‐g‐AA samples at the same grafting degree.

Tuning the Surface Properties of Oxygen-Rich and Nitrogen-Rich Plasma Polymers: Functional Groups and Surface Charge

“…In this regard, modifying surfaces with plasma is considered as one of the most efficient methods through which surface adhesion can be enhanced either through functional group grafting or deposition of a new functional layer [13][14][15]. One frequently proposed plasma base strategy is the coating of a surface with organic macromolecules (plasma polymers) containing a desirable chemical composition and morphology which allows some control over the interactions of the surfaces with surrounding biomolecules and living cells while the bulk properties of the substrate remain largely intact [16][17][18].…”

Loading and Release of Drugs from Oxygen‐rich Plasma Polymer Coatings

“…Polymer surfaces can be chemically modified by incorporating new functional groups, for example, amide, amine, alcohol, or carboxylic acid, by way of gamma irradiation or “cold” plasma 4–9. Plasma polymerization (PP) is particularly attractive, because it allows one to modify surface characteristics of polymers without affecting the bulk properties, unlike grafting by gamma irradiation, which penetrates throughout the material 4, 6. Plasma treatment can result in mere surface modification (functionalization), in polymerization, or in etching 9.…”

Fiber-Supported Acid–Base Bifunctional Catalysts for Efficient Nucleophilic Addition in Water

“…Thus, the fabricated structures may effectively enhance the activity of catalysts. The grafting degree of acrylic acid was also determined by acid−base exchange capacity 64 (Table S3 in SI). Herein, grafting degree = [(W g − W o )/W o ] × 100%, where W o and W g are the weights of PPF and the grafted fiber, respectively.…”

“…Because PPF is composed of saturated hydrocarbon chains, most of the modifications focused on grafting methods through free radical polymerization techniques. − Grafting acrylic acid onto PPF has been widely investigated in the modification of PPF; − on this basis, we improved the grafting method to afford an acrylic acid (AA) modified fiber catalyst A and a 4-vinylpyridine (4-VP) modified catalyst B (Scheme ). The details are described in the Supporting Information.…”