Physical properties of rubber-based nanocomposites

Lu, Yonglai; Zhang, L.-Q.

doi:10.1533/9780857090249.4.787

Cited by 3 publications

(3 citation statements)

References 85 publications

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“…Most of these reinforcements are minerals or carbonized organic compounds in micron size. By reducing the size of the reinforcements from micrometers to nanometers, the nanocomposites reinforced with nano-sized particles exhibit superior mechanical, thermal and barrier, and permeability properties [ 2 ]. Recently, the development of rubber-based nanocomposites has attracted great interest and nano-sized fillers such as layered silicates, carbon nanotubes, metal oxides and polyhedral oligomeric silsesquioxane (POSS) nanoparticles have been widely used to prepare them [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

The effect of POSS nanoparticles on crosslinking of styrene-butadiene rubber nanocomposites

Açar¹,

Taşdelen²,

Karaağaç³

2023

Turkish Journal of Chemistry

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The effect of octaisobutyl-polyhedral oligomeric silsesquioxane (OIB-POSS) as a nanosized reinforcement on the cure kinetics, crosslinking density, and mechanical properties of styrene-butadiene rubber (SBR) nanocomposites was examined in this study. For this purpose, SBR compounds with various OIB-POSS nanoparticle loadings at 1, 3, and 5 phr were prepared and their results were compared with a reference compound without OIB-POSS. When 1 phr of OIB-POSS was added to the rubber matrix, the elongation at break values and tensile strength of the corresponding nanocomposite increased by 24.1% and 29.2% compared to the reference sample, respectively. The presence of OIB-POSS nanoparticles and their random distribution in the SBR matrix was confirmed by transmission electron microscopy. The crosslinking density of nanocomposites was calculated by the Flory-Rehner method and a decrease was observed with the addition of OIB-POSS nanoparticles. In addition, thermal aging process as 70 °C for 70 h was applied to vulcanized samples. It was noted that the mechanical properties of SBR/OIB-POSS nanocomposites remarkably improved, whereas their crosslinking densities gradually decreased after thermal aging.

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Section: Introductionmentioning

confidence: 99%

The effect of POSS nanoparticles on crosslinking of styrene-butadiene rubber nanocomposites

Açar¹,

Taşdelen²,

Karaağaç³

2023

Turkish Journal of Chemistry

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“…Kullanılan takviyelerin çoğu mikron boyutunda mineraller veya karbonize organik bileşiklerdir. Takviye boyutunu mikrometreden nanometreye indirerek elde edilen, nano boyutlu parçacıklarla güçlendirilmiş nanokompozitler üstün özellikler sergilerler [3]. Son zamanlarda, kauçuk esaslı nanokompozitlerin geliştirilmesi büyük ilgi görmektedir.…”

Section: Introductionunclassified

Haloysit içeren stiren-bütadien kauçuk nanokompozitlerinin hazırlanması ve mekanik özelliklerinin incelenmesi

Açar¹,

Taşdelen²,

Karaağaç³

2023

JIENS

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Çevrimiçi mevcutBu çalışmada, saf haloysit (HNT) ile tiyol ve vinil gruplarıyla fonksiyonlandırılmış HNT nanodolguları, stiren-bütadien kauçuk (SBR) karışımlarına 3 phr olacak şekilde eklenerek farklı SBR nanokompozitleri hazırlanmış ve bu nanokompozitler reolojik, mekanik ve morfolojik olarak karakterize edilmiştir. Hazırlanan nanokompozitlerin termal yaşlanma prosesleri ve çapraz bağ yoğunlukları da HNT nanotüpleri varlığında incelenmiştir. SBR nanokompozitleri kükürt ile vulkanize edilmiş ve pişme özellikleri döner kalıp reometresi ile belirlenmiştir. Tiyol ile modifiye edilmiş HNT nanodolgusu ile hazırlanan SBR nanokompozitinin, saf HNT ve vinil modifiyeli HNT içeren nanokompozitlere göre daha fazla çapraz bağ yoğunluğu içerdiği bulunmuştur. Ayrıca, saf ve fonksiyonlandırılmış HNT içeren tüm SBR nanokompozitlerinin, nanodolgu içermeyen kauçuk karışımına kıyasla daha iyi mekanik özellikler gösterdiği belirlenmiştir. Bu sonuç, SBR matrisinde bulunan HNT'nin takviye etkisini göstermiştir. Ayrıca, uygulanan termal yaşlanma sonrası SBR/HNT nanokompozitlerinin çapraz bağ yoğunlukları ile mekanik kuvvetleri artmıştır. Bu durum ise ısı etkisiyle ilave çapraz bağ oluşumunu ifade eden post-cure etkisini doğrulamıştır.2023 JIENS Tüm hakları saklıdır.

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“…5 Moreover, randomly oriented platelets provide only half the improvement in barrier properties in comparison to platelets perfectly aligned with the surface of the film. 6 Therefore, melt compounding of polymers with clay is expected to show limitations in the ability to improve barrier properties, because aspect ratio may be reduced, clay platelets may agglomerate, and platelet orientation is usually random.…”

Section: Introductionmentioning

confidence: 99%

Effect of PLA crystallization on the structure of biomimetic composites of PLA and clay

Boesel

Geus

Thöny‐Meyer

2012

J of Applied Polymer Sci

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Composites of poly(lactic acid) (PLA) and organoclays with clay loadings of up to 80% were prepared as self‐supporting films using a doctor‐blading approach. Depending on the properties of the used organoclay, either intercalated nanocomposites or conventional composites were obtained. The incorporation of such high amounts of clay resulted in up to 10‐fold decrease in the water vapor transmission rate when compared to the pristine polymer. The effect of clay platelets on the crystallization of PLA chains was also studied; it was found that high amounts of clay hinder only the melt crystallization of the polymer, whereas cold crystallization proceeds as usual. On the other hand, the crystallization of PLA also influenced the composite structure by increasing the extent of intercalation of polymer between clay layers. This study thus shows that the change in the extent of clay‐polymer interactions is also an important factor in controlling nanocomposite structure, especially for high loading. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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Physical properties of rubber-based nanocomposites

Cited by 3 publications

References 85 publications

The effect of POSS nanoparticles on crosslinking of styrene-butadiene rubber nanocomposites

The effect of POSS nanoparticles on crosslinking of styrene-butadiene rubber nanocomposites

Haloysit içeren stiren-bütadien kauçuk nanokompozitlerinin hazırlanması ve mekanik özelliklerinin incelenmesi

Effect of PLA crystallization on the structure of biomimetic composites of PLA and clay

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