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تاثیر سامانه بیوپلیمری کیتوزان و نانوالیاف سلولزی بر ویژگی‌های نوری و مقاومتی خمیرکاغذ شیمیایی- مکانیکی(CMP ) | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| مقاله 34، دوره 35، شماره 1 - شماره پیاپی 70، اردیبهشت 1399، صفحه 61-75 اصل مقاله (676.82 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijwpr.2020.128617.1584 | ||
| نویسندگان | ||
| رامین ویسی* 1؛ یوسف یوسفی گلوردی2 | ||
| 1عضوهیات علمی واحد چالوس | ||
| 2گروه صنایع چوب و کاغذ، دانشگاه آزاد اسلامی واحد چالوس | ||
| چکیده | ||
| این تحقیق با هدف تاثیر استفاده از کیتوزان و نانوسلولز بر ویژگی های مقاومتی خمیرکاغذ شیمیایی- مکانیکی(CMP) انجام شد. به همین منظور، ابتدا مقداری ازخمیرشیمیایی-مکانیکی(CMP) رنگبری شده کارخانه چوب و کاغذ مازندران به عنوان نمونه شاهد انتخاب شد. سپس نانو الیاف سلولزی به صورت ژل سفید رنگ و در 3 سطح 0 ،2 و 3 درصد استفاده گردید. همچنین کیتوزان در 5 سطح 0، 5/0، 1، 5/1و2 درصد به سوسپانسیون خمیر کاغذ CMP حاصل اضافه شد. از خمیرکاغذ‌های مذکور کاغذهایی با وزن پایه gr/m2 60 تهیه و خواص نوری و مقاومتی آن ها طبق آزمون های استاندارد TAPPI اندازه گیری و مقایسه گردید. نتایج نشان داد که با افزودن کیتوزان مقاومت های به پارگی، کششی، ترکیدن، طول پارگی، مقاومت به عبور هوا،زردی و سبز رنگی در کاغذ حاصل از خمیرکاغذ CMP افزایش و روشنی، جذب آب و فاکتورa* کاهش یافته است. با افزودن نانو سلولز و کیتوزان به خمیرکاغذ CMP مقاومت های کششی، ترکیدن، طول پارگی و مقاومت به عبور هوا، جذب آب، زردی و فاکتورa* افزایش و مقاومت به پارگی، روشنی، سبز رنگی، ماتی کاهش یافته است. نتایج نشان داد که افزودن 2 درصد کیتوزان و همچنین افزودن همزمان2 درصد کیتوزان و 3 درصد نانو سلولز به خمیرکاغذ CMP باعث بهبود اکثر ویژگی ها درکاغذ حاصل شده است و می تواند به عنوان تیمار برتر انتخاب و معرفی گردد. | ||
| کلیدواژه‌ها | ||
| کیتوزان؛ نانوسلولز؛ خمیرکاغذ CMP؛ ویژگی های نوری و مقاومتی | ||
| عنوان مقاله [English] | ||
| Effect of Nano-fibrillated Cellulose and Chitosan Bio-polymeric System on the Optical and Mechanical Properties of Chemi-mechanical Pulp(CMP) | ||
| نویسندگان [English] | ||
| Ramin Vaysi1؛ Yousef Yousefi-golordi2 | ||
| 2Wood and paper dept., Islamic Azad University of Chalous Branch. | ||
| چکیده [English] | ||
| This study was aimed to investigate the effect of cellulose nano-fibers and chitosan on optical and mechanical properties of chemi-mechanical pulp. For this purpose, some of the bleached CMP pulp of Mazandaran Wood and Paper Industries (MWPI) were randomly selected as a control sample. In addition, the cellulose nanofibers were used as a white gel at 3 levels of 0, 2, and 3%. The chitosan was then added to the CMP pulps suspensions at 5 levels of 0, 0.5, 1, 1.5, 2%, as well. Hand-sheets with a basis weight of 60 gr/m2 were prepared from the mentioned pulps. The optical and mechanical properties were then measured and compared using TAPPI standard test methods. The results showed that by adding chitosan, tear, tensile, burst and breaking length strengths, air resistance, yellowness, and greenness increased and brightness, Cobb 60 and a* factor decreased. On the other hand, with the addition of chitosan and nano-cellulose to CMP pulp, the tensile, burst, breaking length strengths, air resistance, Cobb 60, yellowness and a* factor increased and the tear, brightness, and opacity decreased. Moreover, the findings showed that by simultaneous adding 2% chitosan, 2% chitosan, and 3% cellulose nanofibers to the CMP pulp, most of the paper properties were improved. Therefore, it can also be introduced as the best treatment. | ||
| کلیدواژه‌ها [English] | ||
| Chitosan, Nano cellulose, CMP pulp, Optical and mechanical properties | ||
| مراجع | ||
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