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Low-Temperature Mechanical Properties of High-Density and Low-Density Polyethylene and Their Blends Научная публикация

Журнал Polymers
, E-ISSN: 2073-4360
Вых. Данные Год: 2021, Том: 13, Номер: 11, Номер статьи : 1821, Страниц : 21 DOI: 10.3390/polym13111821
Ключевые слова polyethylene; blends; low-temperature characteristics; mechanical properties; molecular structure
Авторы Salakhov Ildar I. 1 , Shaidullin Nadim M. 1 , Chalykh Anatoly E. 2 , Matsko Mikhail A. 3 , Shapagin Alexey V. 2 , Batyrshin Ayrat Z. 1 , Shandryuk Georgiy A. 4 , Nifant’ev Ilya E. 4
Организации
1 R&D Center PJSC Nizhnekamskneftekhim, Nizhnekamsk, Sobolekovskaya Str. 23, 423574 Republic of Tatarstan, Russia
2 Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (IPCE RAS), Leninskiy Prospekt 31, 119071 Moscow, Russia
3 Boreskov Institute of Catalysis Siberian Branch of the Russian Academy of Sciences, Acad. Lavrentiev Prospect 5, 630090 Novosibirsk, Russia
4 A.V. Topchiev Institute of Petrochemical Synthesis of Russian Academy of Sciences (TIPS RAS), Leninskii pr. 29, 119991 Moscow, Russia

Информация о финансировании (3)

1 Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) 0239-2021-0004
2 Российский научный фонд 21-73-30010
3 Министерство науки и высшего образования Российской Федерации (с 15 мая 2018) 0081-2019-0019

Реферат: Low-temperature properties of high-density polyethylene (HDPE), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), and their blends were studied. The analyzed low-temperature mechanical properties involve the deformation resistance and impact strength characteristics. HDPE is a bimodal ethylene/1-hexene copolymer; LDPE is a branched ethylene homopolymer containing short-chain branches of different length; LLDPE is a binary ethylene/1-butene copolymer and an ethylene/1-butene/1-hexene terpolymer. The samples of copolymers and their blends were studied by gel permeation chromatography (GPC), differential scanning calorimetry (DSC), 13C NMR spectroscopy, and dynamic mechanical analysis (DMA) using testing machines equipped with a cryochamber. It is proposed that such parameters as “relative elongation at break at −45 °C” and “Izod impact strength at −40 °C” are used instead of the ductile-to-brittle transition temperature to assess frost resistance properties because these parameters are more sensitive to deformation and impact at subzero temperatures for HDPE. LLDPE is shown to exhibit higher relative elongation at break at −45 °C and Izod impact strength at −20 ÷ 60 °C compared to those of LDPE. LLDPE terpolymer added to HDPE (at a content ≥ 25 wt.%) simultaneously increases flow properties and improves tensile properties of the blend at −45 °C. Changes in low-temperature properties as a function of molecular weight, MWD, crystallinity, and branch content were determined for HDPE, LLDPE, and their blends. The DMA data prove the resulting dependences. The reported findings allow one to understand and predict mechanical properties in the HDPE–LLDPE systems at subzero temperatures.
Библиографическая ссылка: Salakhov I.I. , Shaidullin N.M. , Chalykh A.E. , Matsko M.A. , Shapagin A.V. , Batyrshin A.Z. , Shandryuk G.A. , Nifant’ev I.E.
Low-Temperature Mechanical Properties of High-Density and Low-Density Polyethylene and Their Blends
Polymers. 2021. V.13. N11. 1821 :1-21. DOI: 10.3390/polym13111821 WOS Scopus РИНЦ OpenAlex CAPlus PMID
Файлы: Полный текст от издателя
Даты:
Поступила в редакцию: 25 апр. 2021 г.
Принята к публикации: 28 мая 2021 г.
Опубликована online: 31 мая 2021 г.
Опубликована в печати: 1 июн. 2021 г.
Идентификаторы БД:
≡ Web of science: WOS:000660509400001
≡ Scopus: 2-s2.0-85107911773
≡ РИНЦ: 46856269
≡ OpenAlex: W3164138952
≡ Chemical Abstracts: 2021:1454233
≡ PMID (PubMed): 34072928
Цитирование в БД:
≡ Web of science 48 Сбор данных от 13.02.2026
≡ Scopus 52 Сбор данных от 08.02.2026
≡ РИНЦ 29 Сбор данных от 08.02.2026
≡ OpenAlex 53 Сбор данных от 08.02.2026
Альметрики: