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                                                                                                                        1. 歡迎訪問東莞市匯瑞膠業有限公司旗下品牌—匯巨膠粘
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                                                                                                                          植物蛋白類如何改性膠粘劑?

                                                                                                                          作者:信息發布員 來源:東莞市匯瑞膠業有限公司 時間:2016/11/28 15:45:29

                                                                                                                          匯瑞膠粘劑網 資訊:

                                                                                                                          植物蛋白質來源廣泛,改性后制備的膠粘劑的耐水性較好,被稱為新一代的新型綠色膠粘劑。主要通過堿、脈或鹽酸肌對其進行改性,從而使蛋白質分子展開,二級結構部分維持,一些疏水基團暴露,提高了膠粘劑的粘接力和耐水性網。 
                                                                                                                                大豆蛋白具有價格低廉、產量大、可再生的優點,但粘接力不強且耐水性差。Zhikai Zhong等采用十二烷基硫酸鈉(SDS)和鹽酸肌改性,使蛋白質結構部分展開,內部疏水性的部分暴露,提高大豆分離蛋白中的不可溶性部分的含量,使蛋白質中的可溶性部分的含量降低到2%以下,同時利用干燥過程影響蛋白質的物理、化學性質,從而使膠粘劑的耐水性能增強. 
                                                                                                                                Rakesh Kumer等研究從蛋白質濃縮物(SPC)中分離出蛋白的蛋白酶改性和尿素改性過程,結果表明與商業膠粘劑相比較,木瓜蛋白酶和尿素改性處理后的蛋白質顯示了較強的粘接強度和耐水性,這主要是由改性處理后結構的部分改變所決定的。蚌、貝類蛋白具有很強的粘接性能,但價格較貴且不易得到,YuanUu等在大豆蛋白的基礎上,引人了海產類蛋白的核心官能團,彌補了大豆蛋白膠的缺陷,從而使其具有良好的粘接強度和耐水性。 

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