Electron holography and AFM studies on styrenic block copolymers and a high impact polystyrene

2005 ◽  
Vol 96 (5) ◽  
pp. 1573-1583 ◽  
Author(s):  
Paul Simon ◽  
Rameshwar Adhikari ◽  
Hannes Lichte ◽  
Goerg H. Michler ◽  
Marc Langela
Keyword(s):  
Block Copolymers ◽  
High Impact ◽  
Electron Holography ◽  
High Impact Polystyrene

scholarly journals Emulsion Copolymerization of Polyangelicalactone with Styrene

2019 ◽  
pp. 261-268 ◽  
Author(s):  
Konstantin L. Kaygorodov ◽  
Valery E. Tarabanko ◽  
Marina A. Smirnova ◽  
Nikolay V. Tarabanko ◽  
Yuri N. Malyar ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Block Copolymers ◽  
Emulsion Polymerization ◽  
Rate Constants ◽  
High Impact ◽  
Polymerization Rate ◽  
Emulsion Copolymerization ◽  
High Impact Polystyrene ◽  
First Time

For the first time emulsion polymerization of polyangelicalactone with styrene was carried out. Block copolymers with a molecular weight of 40000-1000000 and containing 5-40 wt. % of styrene were prepared. Polymerization rate constants were evaluated. Mechanical properties were evaluated after the copolymers were cured. The cured block copolymers satisfy the basic requirements for high impact polystyrene, and they are biodegradable

scholarly journals Enhanced Wetting and Adhesive Properties by Atmospheric Pressure Plasma Surface Treatment Methods and Investigation Processes on the Influencing Parameters on HIPS Polymer

Polymers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 901
Author(s):  
Miklós Berczeli ◽  
Zoltán Weltsch
Keyword(s):  
Surface Treatment ◽  
Plasma Treatment ◽  
Atmospheric Pressure ◽  
High Impact ◽  
Plasma Parameters ◽  
Plasma Surface ◽  
Wetting Properties ◽  
High Impact Polystyrene ◽  
Process Modification ◽  
Plasma Surface Treatment

The development of bonding technology and coating technologies require the use of modern materials and topologies for the demanding effect and modification of their wetting properties. For the industry, a process modification process that can be integrated into a process is the atmospheric pressure of air operation plasma surface treatment. This can be classified and evaluated based on the wettability, which has a significant impact on the adhesive force. The aim is to improve the wetting properties and to find the relationship between plasma treatment parameters, wetting, and adhesion. High Impact PolyStyrene (HIPS) was used as an experimental material, and then the plasma treatment can be treated with various adjustable parameters. The effect of plasma parameters on surface roughness, wetting contact angle, and using Fowkes theory of the surface energy have been investigated. Seven different plasma jet treatment distances were tested, combined with 5 scan speeds. Samples with the best plasma parameters were prepared from 25 mm × 25 mm overlapping adhesive joints using acrylic/cyanoacrylate. The possibility of creating a completely hydrophilic surface was achieved, where the untreated wetting edge angle decreased from 88.2° to 0° for distilled water and from 62.7° to 0° in the case of ethylene glycol. The bonding strength of High Impact PolyStyrene was increased by plasma treatment by 297%.

Effect of Triaryl Phosphate, Zinc and Zinc Borate on Fire Properties of High Impact Polystyrene and High Impact Polystyrene-Polyphenylene Oxide Blend (Modified-Polyphenylene Oxide

1994 ◽  
Vol 12 (6) ◽  
pp. 529-550 ◽  
Author(s):  
Ramazan Benrashid ◽  
Gordon L. Nelson ◽  
Donald J. Ferm
Keyword(s):  
Flame Retardancy ◽  
High Impact ◽  
Zinc Borate ◽  
Polyphenylene Oxide ◽  
High Impact Polystyrene ◽  
Smoke Generation ◽  
Flame Retarded ◽  
Rate Of Heat Release ◽  
Fire Properties ◽  
Phase Activity

Samples of m-PPO (virgin and flame retarded) and high impact polystyrene blended with zinc and zinc borate (2ZnO·3B2O3·3.5H 2O), were pre pared. The effect of triaryl phosphate on the flame retardancy of PPO-HIPS in conjunction with zinc and zinc borate was studied. For polystyrene zinc borate shows some reduction in smoke generation. Zinc, however does not show any effect on smoke generation for high impact polystyrene. Triphenyl phosphate shows minimal flame retardancy in HIPS which is not enhanced by zinc. Addition of zinc gives an increase in oxygen index for FR m-PPO, whereas zinc borate decreases the OI values. Zinc borate may sequester triaryl phos phate and thus eliminate its vapor phase activity. Zinc borate shows a signifi cant reduction in smoke generation and rate of heat release for m-PPO.

Studies on the stretching behaviour of medium gauge high impact polystyrene sheets during positive thermoforming

2014 ◽  
Vol 31 (1) ◽  
pp. 96-112 ◽  
Author(s):  
Satish Kommoji ◽  
Ritima Banerjee ◽  
Naresh Bhatnagar ◽  
Anup K Ghosh
Keyword(s):  
High Impact ◽  
High Impact Polystyrene

scholarly journals The co-pyrolysis of flame retarded high impact polystyrene and polyolefins

2007 ◽  
Vol 80 (2) ◽  
pp. 406-415 ◽  
Author(s):  
William J. Hall ◽  
Nona Merry M. Mitan ◽  
Thallada Bhaskar ◽  
Akinori Muto ◽  
Yusaku Sakata ◽  
...  
Keyword(s):  
High Impact ◽  
High Impact Polystyrene ◽  
Flame Retarded

Characterization and processability of post-consumer, double-recycled high impact polystyrene from disposable cups

2021 ◽  
Author(s):  
Hanan El Bhilat ◽  
Abdelilah Hachim ◽  
Houda Salmi ◽  
Hassan Mabchour ◽  
Khalid El Had
Keyword(s):  
High Impact ◽  
High Impact Polystyrene
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