Preparation, Structure, and Properties of Track-Etched Membranes Based on Polylactic Acid
| Parent link: | Membranes and Membrane Technologies Vol. 3, iss. 5.— 2021.— [P. 282-290] |
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| সংস্থা লেখক: | , |
| অন্যান্য লেখক: | , , , , |
| সংক্ষিপ্ত: | Title screen New applications, in particular in medicine, require the creation of track-etched membranes (TMs) with fundamentally new properties. There are well-known TMs made from polycarbonate, polyimide, polypropylene, polyethylene terephthalate, polyethylene naphthalate, and polyvinylidene fluoride; that is, polymers characterized by high chemical resistance. This study focuses on the development of a membrane made of the biodegradable polymer polylactic acid (PLA). Films prepared from a 1% solution of polylactic acid with a molecular weight of Mw=121000 g/mol were taken as the initial matrix for TM fabrication. The films were irradiated with 1.2-MeV Xe ions at a fluence of 3.1•107 cm-2 on an IC-100 cyclotron. Etching was carried out in NaOH solutions of various concentrations (0.1, 1, or 2 mol/L) with varying the temperature from 18 to 70°С and the treatment time from 5 to 30 min. It has been revealed that the optimal treatment conditions for irradiated PLA films are etching in 1 M NaOH at a temperature of 44°C. This mode, with a time variation from 10 to 30 min, makes it possible to obtain through pores with a diameter of 0.6 to 1.5 µm with channel geometry close to cylindrical. It has been found that an increase in the etching time over 20 min leads to a decrease in the roughness of both membrane sides. Режим доступа: по договору с организацией-держателем ресурса |
| ভাষা: | ইংরেজি |
| প্রকাশিত: |
2021
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| বিষয়গুলি: | |
| অনলাইন ব্যবহার করুন: | https://doi.org/10.1134/S2517751621050073 |
| বিন্যাস: | বৈদ্যুতিক গ্রন্থের অধ্যায় |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666308 |
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| 200 | 1 | |a Preparation, Structure, and Properties of Track-Etched Membranes Based on Polylactic Acid |f N. M. Ivanova, E. O. Filippova, S. I. Tverdokhlebov [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 35 tit.] | ||
| 330 | |a New applications, in particular in medicine, require the creation of track-etched membranes (TMs) with fundamentally new properties. There are well-known TMs made from polycarbonate, polyimide, polypropylene, polyethylene terephthalate, polyethylene naphthalate, and polyvinylidene fluoride; that is, polymers characterized by high chemical resistance. This study focuses on the development of a membrane made of the biodegradable polymer polylactic acid (PLA). Films prepared from a 1% solution of polylactic acid with a molecular weight of Mw=121000 g/mol were taken as the initial matrix for TM fabrication. The films were irradiated with 1.2-MeV Xe ions at a fluence of 3.1•107 cm-2 on an IC-100 cyclotron. Etching was carried out in NaOH solutions of various concentrations (0.1, 1, or 2 mol/L) with varying the temperature from 18 to 70°С and the treatment time from 5 to 30 min. It has been revealed that the optimal treatment conditions for irradiated PLA films are etching in 1 M NaOH at a temperature of 44°C. This mode, with a time variation from 10 to 30 min, makes it possible to obtain through pores with a diameter of 0.6 to 1.5 µm with channel geometry close to cylindrical. It has been found that an increase in the etching time over 20 min leads to a decrease in the roughness of both membrane sides. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Membranes and Membrane Technologies | ||
| 463 | |t Vol. 3, iss. 5 |v [P. 282-290] |d 2021 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a polylactic acid | |
| 610 | 1 | |a track-etched membranes | |
| 610 | 1 | |a pores | |
| 610 | 1 | |a contact angle | |
| 610 | 1 | |a etching | |
| 610 | 1 | |a полимолочная кислота | |
| 610 | 1 | |a трековые мембраны | |
| 610 | 1 | |a поры | |
| 610 | 1 | |a смачивание | |
| 610 | 1 | |a травление | |
| 610 | 1 | |a структура | |
| 610 | 1 | |a свойства | |
| 701 | 1 | |a Ivanova |b N. M. |c physicist |c senior assistant of Tomsk Polytechnic University |f 1991- |g Nina Mikhailovna |3 (RuTPU)RU\TPU\pers\34210 | |
| 701 | 1 | |a Filippova |b E. O. |c physicist |c Professor of Tomsk Polytechnic University, Doctor of Technical Sciences |f 1988- |g Ekaterina Olegovna |3 (RuTPU)RU\TPU\pers\37038 |9 20053 | |
| 701 | 1 | |a Tverdokhlebov |b S. I. |c physicist |c Associate Professor of Tomsk Polytechnic University, Candidate of physical and mathematical science |f 1961- |g Sergei Ivanovich |3 (RuTPU)RU\TPU\pers\30855 |9 15101 | |
| 701 | 1 | |a Levkovich |b N. V. |g Nataljya Vladimirovna | |
| 701 | 1 | |a Apel |b P. Yu. |g Pavel Yurjevich | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа ядерных технологий |b Научно-образовательный центр Б. П. Вейнберга |3 (RuTPU)RU\TPU\col\23561 |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Исследовательская школа физики высокоэнергетических процессов |c (2017- ) |3 (RuTPU)RU\TPU\col\23551 |
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