Synthesis and Biomedical Properties of Poly-[(Ethylene-Vinylalcohol)-<i>g</i>-Acrylamide]

Yao, Kang; Liu, Zhu Fang; Gu, Han Qin; Fan, Ting Yu

doi:10.1080/00222338708076939

Cited by 7 publications

(1 citation statement)

References 13 publications

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“…Graft copolymerization is an effective technique used for modifying the properties of synthetic (7) or natural fibers (8). Grafting can be achieved by radiation (9,10) or chemical methods (11)(12)(13).…”

Section: Introductionmentioning

confidence: 99%

Preparation of Poly(ethylene terephthalate)‐g‐Methacrylamide Copolymers Initiated by Azobisizobutyronitrile: Characterization and Investigation of Some Properties

Alakara

Karakışla

Saçak

2008

Journal of Macromolecular Science, Part A

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Poly(ethylene terephthalate)-g-methacrylamide (PET-g-MAAm) copolymer was prepared by graft copolymerization in organic solvent/ water mixtures by using azobisizobutyronitrile (AIBN) as an initiator. The highest graft yield was obtained in 20/80 (v/v) acetonitrile/ water mixture as 30.0%. The effect of polymerization parameters such as the ratio of solvent/water mixture, concentrations of initiator and monomer, temperature and time on the graft yield was studied. The moisture regain of the PET fiber increased with grafting from 0.42% to 3.01%. Thermogravimetric data showed that the thermal stability of PET fibers decreased with grafting and 85% of total weight of 29.7% grafted fiber was lost at 5008C. On the other hand, fiber density decreased with increasing graft yield. At SEM micrographs, the layers oriented in the direction of fiber length were observed on the surface of PET fiber as a result of grafting.

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Section: Introductionmentioning

confidence: 99%

Preparation of Poly(ethylene terephthalate)‐g‐Methacrylamide Copolymers Initiated by Azobisizobutyronitrile: Characterization and Investigation of Some Properties

Alakara

Karakışla

Saçak

2008

Journal of Macromolecular Science, Part A

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Temperature‐responsive characteristics of N‐isopropylacrylamide‐grafted polymer films prepared by photografting

Kubota

Nagaoka

Katakai

et al. 1994

J of Applied Polymer Sci

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SYNOPSISPhotografting of N-isopropylacrylamide ( NIPAAm) on ethylene-vinyl alcohol copolymer films (thickness = 15,20, and 25 Fm) and low-and high-density polyethylene films (thickness = 30 pm) was carried out at 60°C in a water medium. Xanthone was used as a photoinitiator by coating it on the film samples. The resultant NIPAAm-grafted films exhibited a temperature-responsive character, which was evaluated by measuring a dimensional change of the grafted films. The grafted films swelled and shrank in water at temperatures lower and higher than around 30"C, respectively. The character was found to be reversible between 0 and 50°C. It was observed that the extent of the character is largely influenced by film thickness, location of NIPAAm-grafted chains, and crystallinity of film substrate. 0 1994

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Surface grafting of polyacrylamide from polyethylene‐based copolymer film

Luo¹,

Husson²,

Hirt³

et al. 2004

J of Applied Polymer Sci

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Atom transfer radical polymerization (ATRP) was used to grow polyacrylamide from the surface of ethylene-acrylic acid copolymer (EAA) film. The surface functionalization constituted initiator immobilization and surface graft polymerization. All reaction steps were conducted at 24 Ϯ 3°C; polymerization was done in aqueous solution. For initiator immobilization, the carboxylic acid groups on EAA film were converted to acid chloride groups; further reaction with ethanolamines gave hydroxyl groups onto which 2-bromoisobutyryl bromide initiator was attached. ATR-FTIR data indicated that 1.64 Ϯ 0.09 times higher initiator density was achieved by using diethanolamine, relative to ethanolamine. Acrylamide monomer was polymerized from the initiator by ATRP to yield nondistorted, transparent films with polymerization times of up to 1 h. For films prepared using diethanolamine, 1 h polymerization time reduced the static water contact angle by more than 50°, significantly increasing the hydrophilicity of the film surface.

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Synthesis and Biomedical Properties of Poly-[(Ethylene-Vinylalcohol)-g-Acrylamide]

Cited by 7 publications

References 13 publications

Preparation of Poly(ethylene terephthalate)‐g‐Methacrylamide Copolymers Initiated by Azobisizobutyronitrile: Characterization and Investigation of Some Properties

Preparation of Poly(ethylene terephthalate)‐g‐Methacrylamide Copolymers Initiated by Azobisizobutyronitrile: Characterization and Investigation of Some Properties

Temperature‐responsive characteristics of N‐isopropylacrylamide‐grafted polymer films prepared by photografting

Surface grafting of polyacrylamide from polyethylene‐based copolymer film

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