کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1385103 | 1500620 | 2016 | 7 صفحه PDF | دانلود رایگان |
• Ultrasonically treated starch solution is suitable for surface sizing.
• Its molecular composition differs compared to commercially degradation.
• Paper sized with ultrasonically treated starch solution has high starch content.
• Advantages of ultrasonic treatment are low cooking temperature and no additive use.
The surface application of starch is a well-established method for increasing paper strength. In surface sizing, a solution of degraded starch is applied to the paper. Two procedures have proved valuable for starch degradation in the paper mill: enzymatic and thermo-oxidative degradation. The objective of this study was to determine achievable efficiencies of cavitation in preparing degraded starch for surface application on paper. It was found that ultrasonic-assisted starch degradation can provide a starch solution that is suitable for surface sizing. The molecular composition of starch solutions prepared by ultrasonic treatment differed from that of starch solutions degraded by enzymes or by thermo-oxidation. Compared to commercial degradation processes, this resulted in intensified film formation and in greater penetration during surface sizing and ultimately in a higher starch content of the paper. Paper sized with ultrasonically treated starch solutions show the same strength properties compared to commercially sized paper.
Journal: Carbohydrate Polymers - Volume 138, 15 March 2016, Pages 273–279