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پتانسیل GL به عنوان پلیمر کاتیونی در کنترل مواد چسبناک خمیرکاغذ OCC | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| مقاله 9، دوره 33، شماره 2 - شماره پیاپی 63، تیر 1397، صفحه 256-269 اصل مقاله (446.85 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijwpr.2018.116639.1450 | ||
| نویسندگان | ||
| علی احمدی لاجیمی1؛ محمد آزادفلاح* 2؛ مهدی رحمانی نیا3؛ یحیی همزه4 | ||
| 1گروه علوم و صنایع چوب و کاغذ - دانشگاه تهران | ||
| 2دانشگاه تهران | ||
| 3عضو هیئت علمی دانشگاه تربیت مدرس | ||
| 4استاد- دانشکده منابع طبیعی کرج- دانشگاه تهران | ||
| چکیده | ||
| مواد چسبناک ازچالشهای مهم در کارخانههای بازیافت کاغذ هستند. این مواد مضر با رسوب بر روی اجزای ماشین کاغذ موجب پارگی کاغذ و همچنین کاهش کیفیت محصول نهایی میشوند. از این رو کنترل این مواد و کاهش اثرات مخرب آن ضروری است. استفاده از پلیمرهای کاتیونی به عنوان عامل تثبیت کننده از روشهای موثر کنترل این مواد شناخته می-شوند. لذا در این پژوهش کنترل مواد چسبناک خمیرکاغذ OCCبا استفاده از یک پلیمرکاتیونی تجاری به نام GL در سه سطح 4/0، 8/0 و 2/1 درصد و بر اساس وزن خشک خمیرکاغذ در دو دامنه pH 4 و 7 بررسی شده است. برای ارزیابی کارایی این ترکیب مواد چسبناک ماکرو، مواد چسبناک میکرو، مواد محلول و کلوییدی، میزان کدورت و زمان آبگیری اندازهگیری و با مقادیر نمونههای شاهد مقایسه شدند. نتایج نشان دادند که پلیمرکاتیونی GL در سطح 4/0 و 8/0درصد در هر دوpH 4 و 7 به دلیل دلمهشدن و تثبیت مواد چسبناک بر روی الیاف، سبب کاهش میزان مواد چسبناک ماکرو، میکرو و محلول و کلوییدی و میزان کدورت شد درحالیکه زمان آبگیری بهبود یافت. هرچند، پلیمر کاتیونی GL در مقدار 2/1 درصد عملکرد موثری در کنترل مواد چسبناک از خود نشان نداد. به طورکلی میتوان نتیجه گرفت در صورت مصرف پلیمر کاتیونی GL در دوز و pH مناسب می توان از آن به طور موثری در کنترل مواد چسبناک حاصل از فراوری خمیرکاغذ OCC استفاده کرد. | ||
| کلیدواژهها | ||
| مواد چسبناک؛ پلیمرکاتیونی؛ خمیرکاغذ OCC؛ دلمه سازی | ||
| عنوان مقاله [English] | ||
| Potential of GL as cationic polymer to control stickies of OCC pulp | ||
| نویسندگان [English] | ||
| Ali Ahmadi ladjimi1؛ Mohammad Azadfallah2؛ Mehdi Rahmaninia3؛ Yahya Hamzeh4 | ||
| 1Wood and Paper Science and Technology Department, University of Tehran | ||
| 2University of Tehran | ||
| 3Wood and Paper Science and Technology Department, Faculty Of Natural Resources, Tarbiat Modares University | ||
| 4Wood and Paper Science and Technology Department | ||
| چکیده [English] | ||
| Stickies is among the major challenges in paper recycling mills. This substance deposits on paper machine components and cause to break paper web as well as loss of end product quality. So, it is necessary to control the stickies and lessen its detrimental effects. It is known that cationic polymers as fixing agents can control the stickies efficiently. Therefore, the control of stickies of OCC pulp using a commercial cationic polymer called GL at 0.4, 0.8 and 1.2 percent based on oven dry weight of pulp at pH 4 and pH 5 were investigated. Macro- and microstickies, dissolved and colloid substances (DCS), turbidity, and drainage time were measured to evaluate GL efficiency and compared with control sample. The results indicated that GL dosing at 0.4 and 0.8 percent in pH 4 and 7 due to flocculation and fixing the stickies onto the fiber caused to decrease in macro stickies, microstickies and DCS while improved the drainage time. Although, no efficient performance was observed in controlling stickies at higher content of GL i.e. 1.2 percent. Generally, it is concluded that with consuming at desired pH and dosage content, GL can be used as efficient agent to control stickies in processing of OCC pulp. | ||
| کلیدواژهها [English] | ||
| Stickies, cationic polymer, OCC pulp, FLOCCULATION | ||
| مراجع | ||
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