アクリル酸グラフトポリプロピレン繊維の熱分析(I)示差走査熱量測定

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  • THERMAL ANALYSIS OF ACRYLIC ACID GRAFTED POLYPROPYLENE FABRIC. (I) DIFFERENTIAL SCANNING CALORIMETRY
  • アクリルサン グラフトポリプロピレン センイ ノ ネツ ブンセキ 1 シサ ソウサ ネツリョウ ソクテイ ハンノウセイ モノマー ノ グラフト キョウジュウゴウ ニ ヨル ゴウセイ センイ ノ カガクテキ カイシツ ニ カンスル ケンキュウ 8

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Polypropylene (PP), acrylic acid grafted PP fabrics and those treated with aqueous solutions of some metallic salts or tris (1-aziridinyl) phosphine oxide (APO) were studied by differential scanning calorimetry (DSC).<br>DSC curves of all the samples show no oxidative exotherm in nitrogen atmosphere. On the other hand, acrylic acid grafted PP fabrics with percent grafting of more than 28% show a relatively large exotherm above 170°C in air, and this is shifted to lower temperatures compared with 250°C of original PP fabric, suggesting that PP fabric becomes susceptible to oxidative degradation by acrylic acid grafting. Large broad exotherms appear in air above 180°C in the DSC curves of acrylic acid grafted PP fabrics treated with metallic salts or APO even in sample with a lower percent grafting (19.5%), which is different from those of grafted and untreated fabrics. The DSC curve of acrylic acid grafted and copper salt treated PP fabric shows two peaks successively in the vicinity of these exotherms which may be considered as the indication of copper ion catalyzed oxidative degradation of PP. These exothermic peaks in the DSC curves of the acrylic acid grafted and after-treated PP fabrics are not clearly assigned.<br>Heat of fusion of PP component in the acrylic acid grafted PP fabrics is lowered by the grafting, and a linear relationship is obtained when the heats of fusion of the samples with different percent of grafting are plotted against percent grafting.

収録刊行物

  • 繊維学会誌

    繊維学会誌 29 (6), T243-T250, 1973

    社団法人 繊維学会

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