مقایسه تاثیر نانوسلولز و نانوسیلیکا روی ویژگی‌های مقوای بسته‌بندی ساخته شده از خمیر سفید ضایعاتی

ابراهیم پور کاسمانی, جعفر; ثمریها, احمد; علیراده, عبدالله

مقایسه تاثیر نانوسلولز و نانوسیلیکا روی ویژگی‌های مقوای بسته‌بندی ساخته شده از خمیر سفید ضایعاتی

نوع مقاله : مقاله پژوهشی

نویسندگان

¹ دانشیار، گروه مهندسی چوب و کاغذ، واحد سوادکوه، دانشگاه آزاد اسلامی، سوادکوه، ایران

² استادیار، گروه صنایع چوب، دانشگاه ملی مهارت، تهران، ایران

³ استادیار، گروه کشاوزری، واحد سوادکوه، دانشگاه آزاد اسلامی، سوادکوه، ایران

چکیده

این بررسی با هدف مقایسه تاثیر نانوسلولز و نانوسیلیکا روی ویژگیهای مقوای ساخته شده از خمیرسفید ضایعاتی انجام شد. برای این منظور خمیرکاغذ سفید، از کارخانه کاغذسازی اترک تهیه و با افزودن 4 و 8 درصد نانوالیاف سلولز و نانو سیلیکا بصورت خالص، و این ترکیبات با 5/1 درصد نشاسته کاتیونی کاغذ دست ساز تهیه و مورد آزمونهای فیزیکی، مکانیکی و بررسی ریختشناسی قرار گرفتند. نتایج نشان داد 4 درصد نانوالیاف سلولزی و 5/1 درصد نشاسته کاتیونی بهترتیب دارای 5/2، 1/14، 9/46، 9/35، 5/9، 9/8، 5/20 و 1/5 درصد جذب آب، صافی سطح، شاخص مقاومت به کشش، شاخص مقاومت به ترکیدن، شاخص مقاومت به پارهشدن، روشنی، سفیدی و ماتی بیشتر نسبت به 4 درصد نانوالیاف سلولزی است و بهترتیب دارای 9/30، 3/19 درصد مقاومت به عبور هوا، و زردی کمتر نسبت به آن است. 8 درصد نانوالیاف سلولزی و 5/1 درصد نشاسته کاتیونی بهترتیب دارای 1/16، 7/43، 6/7، 3/21، 7/10، 1/6، 1/1، 6/6 درصد جذب آب، مقاومت به عبور هوا، شاخص مقاومت به کشش، شاخص مقاومت به ترکیدن، شاخص مقاومت به پارهشدن، روشنی، سفیدی و ماتی بیشتر نسبت به 8 درصد نانوالیاف سلولزی است و بهترتیب دارای 2/36 و 1/23 درصد صافی سطح، و زردی کمتر نسبت به 4 درصد نانوالیاف سلولزی است. 4 درصد نانوسیلیکا و 5/1 درصد نشاسته کاتیونی بهترتیب دارای 1/8، 3/18، 1/34 و 9/6 درصد صافی سطح، سفیدی و ماتی بیشتر نسبت به 4 درصد نانوسیلیکا است و بهترتیب دارای 1/10، 1/13، 8/10، 5/1، 9/9 و 2/75 درصد جذب آب، شاخص مقاومت به کشش، شاخص مقاومت به ترکیدن، شاخص مقاومت به پاره شدن، روشنی و زردی کمتر نسبت به 4 درصد نانوسیلیکا است. 8 درصد نانوسیلیکا و 5/1 درصد نشاسته کاتیونی بهترتیب دارای 1، 7/14، 2/40 و 7/6 درصد جذب آب، مقاومت به عبور هوا، سفیدی و ماتی بیشتر نسبت به 8 درصد نانوسیلیکا است و بهترتیب دارای 2/5، 3/36، 3/69، 5/74، 1/5 و 8/14 درصد صافی سطح، شاخص مقاومت به کشش، شاخص مقاومت به ترکیدن، شاخص مقاومت به پاره شدن، روشنی و زردی کمتر نسبت به 8 درصد نانوسیلیکا است. نتایج نشان داد استفاده از نانو الیاف سلولزی ارجحیت بالاتری دارد، و به جهت اینکه منجر به کاهش واردات میگردد میتواند حائز اهمیت باشد.

کلیدواژه‌ها

20.1001.1.22286675.1403.15.58.4.5

عنوان مقاله [English]

Comparison of the effect of nanocellulose and nanosilica on the properties of packaging cardboard made from waste white pulp

نویسندگان [English]

Jafar Ebrahimpour Kasmani ¹
Ahmad Samariha ²
Abdolah Alizadeh ³

¹ Department of Wood and Paper Science & Technology, Savadkooh Branch, Islamic Azad University, Savadkooh, Iran

² Department of Wood Industry, Technical and Vocational University (TVU), Tehran, Iran

³ Department of Agriculture, Savadkooh Branch, Islamic Azad University, Savadkooh, Iran

چکیده [English]

The aim of this study was to compare the effect of nanocellulose and nanosilica on the properties of packaging cardboard made from waste white pulp. In this study, waste pulp was transferred to the laboratory. Handsheet cardboard was made of 60 g.m^-2 with 4 and 8% nano-silica condition, and nanocellulose and cationic starch at 1.5% level. Finally, the physical, mechanical and morphological properties of the prepared cardboard were tested according to the TAPPI standards and compared with each other. The results showed that 4% cellulose nanofibers and 1.5% cationic starch had 2.5, 14.1, 46.9, 35.9, 9.5, 8.9, 20.5 and 5.1%, respectively, water absorption, surface smoothness, tensile strength index, burst resistance index, tensile strength index, brightness, whiteness and opacity more than 4% cellulosic nanofibers and have 30.9%, 19.3% of air resistance, and fewer yellowness than 4% cellulose nanofibers. 8% cellulose nanofibers and 1.5% cationic starch have 16.1%, 43.7%, 7.6%, 21.3%, 10.7%, 6.1%, 1.1%, 6.6% of water absorption, air resistance, tensile strength index, burst strength index, tear strength index, brightness, whiteness and opacity are higher than 8% cellulose nanofibers and have 36.2 and 23.1% surface fines, respectively, and fewer yellowness than 4% of cellulosic nanofibers. 4% nano-silica and 1.5% cationic starch have 8.1%, 18.3%, 34.1% and 6.9% surface smoothness, whiteness and opacity, more than 4% nano-silica, respectively, with 10.1% 13.1, 10.8, 1.5, 9.9 and 75.2% water absorption, tensile strength index, burst strength index, tear strength index, brightness and fewer yellowness than 4% nano-silica. 8% nanosilica and 1.5% cationic starch have 1, 14.7, 40.2 and 6.7% water absorption, air resistance, whiteness and opacity are more than 8% nano-silica, respectively, and have 5.2, 36.3, 69.3, 74.5, 5.1, and 14.8 percent surface smoothness, tensile strength index, burst strength index, tear strength index, brightness and fewer yellowness than 8% nano-silica. The results showed that the use of cellulose nanofibers is more preferable, and it can be important because it leads to a decrease in imports.

کلیدواژه‌ها [English]

white cardboard
cellulose nanofibers
nano-silica
cationic starch

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