Synergistic effect of 4,4′-bis(maleimido) diphenylmethane and zinc oxide on the vulcanization behavior and thermo-mechanical properties of chlorinated isobutylene-isoprene rubber

2016 ◽  
Vol 28 (6) ◽  
pp. 742-753 ◽  
Author(s):  
Shibulal G. S. ◽  
JunYeol Jang ◽  
Kwang-Un Jeong ◽  
Changwoon Nah
Keyword(s):  
Mechanical Properties ◽  
Zinc Oxide ◽  
Synergistic Effect ◽  
Isoprene Rubber

scholarly journals The Synergistic Microbiological Effects of Industrial Produced Packaging Polyethylene Films Incorporated with Zinc Nanoparticles

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1198 ◽  
Author(s):  
Szymon Mania ◽  
Mateusz Cieślik ◽  
Marcin Konzorski ◽  
Paweł Święcikowski ◽  
Andrzej Nelson ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Antimicrobial Activity ◽  
Zinc Oxide ◽  
Synergistic Effect ◽  
Antimicrobial Properties ◽  
Zinc Stearate ◽  
Bacterial Strains ◽  
Zinc Compounds ◽  
Global Migration ◽  
Polyethylene Films

Zinc compounds in polyolefin films regulate the transmission of UV-VIS radiation, affect mechanical properties and antimicrobial activity. According to hypothesis, the use of zinc- containing masterbatches in polyethylene films (PE) with different chemical nature—hydrophilic zinc oxide (ZO) and hydrophobic zinc stearate (ZS)—can cause a synergistic effect, especially due to their antimicrobial properties. PE films obtained on an industrial scale containing zinc oxide and zinc stearate masterbatches were evaluated for antimicrobial activity against E. coli and S. aureus strains. The morphology of the samples (SEM), composition (EDX), UV barrier and transparency, mechanical properties and global migration level were also determined. SEM micrographs confirmed the good dispersion of zinc additives in the PE matrix. The use of both masterbatches in one material caused a synergistic effect of antimicrobial activity against both bacterial strains. The ZO masterbatch reduced the transparency of films, increased their UV-barrier ability and improved tensile strength, while the ZS masterbatch did not significantly change the tested parameters. The global migration limit was not exceeded for any of the samples. The use of ZO and ZS masterbatch mixtures enables the design of packaging with high microbiological protection with a controlled transmission for UV and VIS radiation.

Boron nitride for modification of rubber based on isoprene elastomer

2020 ◽  
pp. 105-112
Author(s):  
K. S. Zhansakova ◽  
E. N. Eremin ◽  
G. S. Russkikh ◽  
O. V. Kropotin
Keyword(s):  
Mechanical Properties ◽  
Boron Nitride ◽  
Gradual Increase ◽  
Physical And Mechanical Properties ◽  
Curing Time ◽  
Cross Link ◽  
Start Time ◽  
Link Density ◽  
Cross Link Density ◽  
Isoprene Rubber

The work studies vulcanization characteristics of elastomers based on isoprene rubber filled with carbon black N330 and boron nitride (BN). The influence of the boron nitride (BN) concentration on technological, dynamic, physical and mechanical properties of elastomers has been researched. The application of boron nitride for producing rubber with good properties has been considered. With a gradual increase of the inert filler BN concentration up to 35%, a decrease in the curing rate by 33% and polymer cross-link density by 26% is observed. Moreover, the start time of vulcanization increases by almost 300%, the optimal curing time by 200%.

Synergistic effect of simonkolleite with zinc oxide: Physico-chemical properties and cytotoxicity in breast cancer cells

2021 ◽  
Vol 266 ◽  
pp. 124548
Author(s):  
Anielle C.A. Silva ◽  
Marcelo J.B. Silva ◽  
Annelise A. Rocha ◽  
Maria P.C. Costa ◽  
Juliane Z. Marinho ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Zinc Oxide ◽  
Synergistic Effect ◽  
Cancer Cells ◽  
Breast Cancer Cells ◽  
Chemical Properties ◽  
Physico Chemical

Preparation and Characterization of Polycaprolactone / Graphene / Zinc Oxide Composites

2021 ◽  
Vol 877 ◽  
pp. 21-26
Author(s):  
Shuai Yuan ◽  
Lin Yuan ◽  
Chen Gao ◽  
Xue Fei Hu ◽  
Chin San Wu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Zinc Oxide ◽  
Soil Test ◽  
Scanning Electron Micrographs ◽  
Biodegradation Rate ◽  
Biodegradable Composite ◽  
Buried Soil ◽  
Oxide Composites ◽  
Scanning Electron

Biodegradable composite from polycaprolactone (PCL) and Graphene/zinc oxide (Graphene/ZnO) is studied. The Graphene/ZnO content is at 0.5%, 1.5% in PCL. Neat PCL and composites were characterized by microstructure, mechanical properties and thermal properties. Scanning electron micrographs show that the additive has agglomerated in PCL/Graphene/ZnO. Agglomeration of the filler results in reduced tensile properties of the composite. The result from XRD indicates Graphene/ZnO can improve the crystallinity of PCL. According to the results of buried soil test and analysis, Graphene/ZnO can reduce the biodegradation rate of PCL and make the material more durable. This new biodegradable composite material can be used as a new environmentally friendly material.

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