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采用三步法合成了电中性季铵阳离子醚化/磺基丁二酸酯化淀粉(电中性QSS),并与聚乙烯醇(PVA)共混,研究了电中性QSS/PVA共混比对共混薄膜力学性能的影响,考察了共混比对其与棉和涤纶纤维间粘合强度的影响。结果表明:随着PVA共混比例的增加,共混物与棉和涤纶纤维间的粘合强度分别由159.3、294.3N/10~3tex逐渐增大到196.5、366.4N/10~3tex,共混薄膜的脆性降低,韧性提高,共混薄膜的断裂伸长率和耐屈曲次数分别由PVA共混比例为0%的3.88%和2345次增大到共混比例为50%的44.8%和8234次,断裂强度由26.7MPa逐渐降低到17.2MPa。
The neutral quaternary ammonium cationic etherification / sulfosuccinate starch (neutral QSS) was synthesized by a three-step method and blended with polyvinyl alcohol (PVA) The effects of blending ratio on the mechanical properties of blends were investigated. The effects of blending ratio on the bonding strength between cotton and polyester fibers were investigated. The results showed that with the increase of the proportion of PVA, the bonding strength between the blend and cotton and polyester fiber increased from 159.3,294.3N / 10 ~ 3tex to 196.5,366.4N / 10 ~ 3tex, respectively The brittleness of the film is reduced and the toughness is improved. The elongation at break and the number of buckling resistance of the blended film increase from 3.88% and 2345 times of 0% of the PVA blend to 44.8% and 8234 times of the blend ratio of 50% , The breaking strength gradually decreased from 26.7MPa to 17.2MPa.