Monodisperse ultrafine polystyrene nanoparticles prepared by a semicontinuous microemulsion polymerization

2008 ◽  
Vol 46 (13) ◽  
pp. 4522-4528 ◽  
Author(s):  
Xuanfeng Kong ◽  
Qian Wu ◽  
Wancheng Hu ◽  
Zhaoqun Wang
2010 ◽  
Vol 45 (6) ◽  
pp. 631-638 ◽  
Author(s):  
Saowaroj Chuayjuljit ◽  
Chutima Worawas

Nanocomposites of ethylene vinyl acetate (EVA) copolymer, polystyrene (PS) nanoparticles, and montmorillonite (MMT) were prepared by latex compounding. The nanolatex of PS was synthesized by differential microemulsion polymerization and then blended with EVA at EVA/PS dry weight ratios of 90/10, 80/20, and 70/30, before mixing with MMT at 1, 3, or 5 parts per hundred rubbers. The latex composite mixtures were cast on a glass mold and compressed into thin sheets. The nanocomposites were characterized for their structures, mechanical properties, and thermal behaviors. The tensile strength, Young’s modulus, storage modulus, and thermal stability were all improved with the incorporation of MMT, although the extent of such depended upon and varied with the EVA/PS ratio of the nanocomposite.


2012 ◽  
Vol 29 (1) ◽  
pp. 29
Author(s):  
Hao CHEN ◽  
Qichao ZOU ◽  
Huan YU ◽  
Jinzhi ZHANG ◽  
Shigan CHAI

2021 ◽  
Vol 97 ◽  
pp. 307-315
Author(s):  
Khanh B. Vu ◽  
Thanh Khoa Phung ◽  
Thao T.T. Tran ◽  
Clement Mugemana ◽  
Ha N. Giang ◽  
...  

2021 ◽  
Vol 368 ◽  
pp. 137607
Author(s):  
Jakub Sopoušek ◽  
Josef Humlíček ◽  
Antonín Hlaváček ◽  
Veronika Horáčková ◽  
Petr Skládal ◽  
...  

RSC Advances ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 2226-2234
Author(s):  
Ana María Pineda-Reyes ◽  
Mauricio Hernández Delgado ◽  
María de la Luz Zambrano-Zaragoza ◽  
Gerardo Leyva-Gómez ◽  
Nestor Mendoza-Muñoz ◽  
...  

A novel solvent emulsification-displacement method for obtaining polystyrene nanoparticles is reported. This process has an added value and can be an alternative for the recycling of expanded polystyrene.


2021 ◽  
Vol 22 (13) ◽  
pp. 7141
Author(s):  
Carmen González-Fernández ◽  
Francisco Guillermo Díaz Baños ◽  
María Ángeles Esteban ◽  
Alberto Cuesta

Nanoplastics (NPs) are one of the most abundant environment-threatening nanomaterials on the market. The objective of this study was to determine in vitro if functionalized NPs are cytotoxic by themselves or increase the toxicity of metals. For that, we used 50 nm polystyrene nanoparticles with distinct surface functionalization (pristine, PS-Plain; carboxylic, PS-COOH; and amino PS-NH2) alone or combined with the metals arsenic (As) and methylmercury (MeHg), which possess an environmental risk to marine life. As test model, we chose a brain-derived cell line (SaB-1) from gilthead seabream (Sparus aurata), one of the most commercial fish species in the Mediterranean. First, only the PS-NH2 NPs were toxic to SaB-1 cells. NPs seem to be internalized into the cells but they showed little alteration in the transcription of genes related to oxidative stress (nrf2, cat, gr, gsta), cellular protection against metals (mta) or apoptosis (bcl2, bax). However, NPs, mainly PS-COOH and PS-NH2, significantly increased the toxicity of both metals. Since the coexistence of NPs and other pollutants in the aquatic environment is inevitable, our results reveal that the combined effect of NPs with the rest of pollutants deserves more attention.


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