The non-isothermal cyclization kinetics of amino-functionalized carbon nanotubes/polyacrylonitrile composites by in situ polymerization

2014 ◽  
Vol 119 (2) ◽  
pp. 1081-1089 ◽  
Author(s):  
Ling Quan ◽  
Hailong Zhang ◽  
Lianghua Xu
Keyword(s):  
Carbon Nanotubes ◽  
In Situ Polymerization ◽  
Functionalized Carbon Nanotubes ◽  
Cyclization Kinetics ◽  
Kinetics Of

The Electronic Role of DNA-Functionalized Carbon Nanotubes: Efficacy for in Situ Polymerization of Conducting Polymer Nanocomposites

2008 ◽  
Vol 130 (25) ◽  
pp. 7921-7928 ◽  
Author(s):  
Yufeng Ma ◽  
Pui Lam Chiu ◽  
Arnaldo Serrano ◽  
Shah R. Ali ◽  
Alex M. Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Polymer Nanocomposites ◽  
Conducting Polymer ◽  
In Situ Polymerization ◽  
Functionalized Carbon Nanotubes

Preparation and Characterization of Silicone Rubber/Functionalized Carbon Nanotubes Composites via In Situ Polymerization

2008 ◽  
Vol 8 (10) ◽  
pp. 5551-5554 ◽  
Author(s):  
Hun-Sik Kim ◽  
Soon-Min Kwon ◽  
Kwang Hee Lee ◽  
Jin-San Yoon ◽  
Hyoung-Joon Jin
Keyword(s):  
Carbon Nanotubes ◽  
Silicone Rubber ◽  
In Situ Polymerization ◽  
Functionalized Carbon Nanotubes

Comparative study of the thermal and mechanical properties of nanocomposites prepared by in situ polymerization of ε-caprolactone and functionalized carbon nanotubes

2012 ◽  
Vol 33 (4) ◽  
pp. 562-572 ◽  
Author(s):  
Víctor H. Antolín-Cerón ◽  
Sergio Gómez-Salazar ◽  
Martin Rabelero ◽  
Víctor Soto ◽  
Gabriel Luna-Bárcenas ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Comparative Study ◽  
In Situ Polymerization ◽  
Thermal And Mechanical Properties ◽  
Functionalized Carbon Nanotubes

scholarly journals Morphology and crystallization kinetics of Rubber-modified Nylon 6 Prepared by Anionic In-situ Polymerization

2020 ◽  
Vol 27 (1) ◽  
pp. 204-215
Author(s):  
Hongkai Zhao ◽  
Dengchao Zhang ◽  
Yingshuang Li
Keyword(s):  
Crystallization Kinetics ◽  
In Situ Polymerization ◽  
Good Description ◽  
Nylon 6 ◽  
Avrami Equation ◽  
Infrared Analysis ◽  
Chain Segment ◽  
The Impact ◽  
Kinetics Of

AbstractIn this work, we modified nylon 6 with liquid rubber by in-situ polymerization. The infrared analysis suggested that HDI urea diketone is successfully blocked by caprolactam after grafting on hydroxyl of HTPB, and the rubber-modified nylon copolymer is generated by the anionic polymerization. The impact section analysis indicated the rubber-modified nylon 6 resin exhibited an alpha crystal form.With an increase in the rubber content, nylon 6 was more likely to generate stable α crystal. Avrami equation was a good description of the non-isothermal crystallization kinetics of nylon-6 and rubber-modified nylon-6 resin. Moreover, it is found that the initial crystallization temperature of nylon-6 chain segment decreased due to the flexible rubber chain segment. n value of rubber-modified nylon-6 indicated that its growth was the coexistence of two-dimensional discoid and three-dimensional spherulite growth. Finally, the addition of the rubber accelerated the crystallization rate of nylon 6.

scholarly journals Effect of Na- and Organo-Modified Montmorillonite/Essential Oil Nanohybrids on the Kinetics of the In Situ Radical Polymerization of Styrene

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 474
Author(s):  
Ioannis S. Tsagkalias ◽  
Alexandra Loukidi ◽  
Stella Chatzimichailidou ◽  
Constantinos E. Salmas ◽  
Aris E. Giannakas ◽  
...  
Keyword(s):  
Essential Oil ◽  
Radical Polymerization ◽  
Food Packaging ◽  
In Situ Polymerization ◽  
Average Molecular Weight ◽  
Monomer Conversion ◽  
Hydroxyl Groups ◽  
Modified Montmorillonite ◽  
Kinetics Of

The great concern about the use of hazardous additives in food packaging materials has shown the way to new bio-based materials, such as nanoclays incorporating bioactive essential oils (EO). One of the still unresolved issues is the proper incorporation of these materials into a polymeric matrix. The in situ polymerization seems to be a promising technique, not requiring high temperatures or toxic solvents. Therefore, in this study, the bulk radical polymerization of styrene was investigated in the presence of sodium montmorillonite (NaMMT) and organo-modified montmorillonite (orgMMT) including thyme (TO), oregano (OO), and basil (BO) essential oil. It was found that the hydroxyl groups present in the main ingredients of TO and OO may participate in side retardation reactions leading to lower polymerization rates (measured gravimetrically by the variation of monomer conversion with time) accompanied by higher polymer average molecular weight (measured via GPC). The use of BO did not seem to affect significantly the polymerization kinetics and polymer MWD. These results were verified from independent experiments using model compounds, thymol, carvacrol and estragol instead of the clays. Partially intercalated structures were revealed from XRD scans. The glass transition temperature (from DSC) and the thermal stability (from TGA) of the nanocomposites formed were slightly increased from 95 to 98 °C and from 435 to 445 °C, respectively. Finally, better dispersion was observed when orgMMT was added instead of NaMMT.

scholarly journals Rapid Coating of Aqueous Pearls with Carbon Nanotubes via In Situ Polymerization of Dopamine

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Lin Rong ◽  
Xiaoqing Mu ◽  
Jinchao Zhao ◽  
Leping Huang ◽  
Mingqiao Ye ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
In Situ Polymerization ◽  
Adhesive Property ◽  
Loss Ratio ◽  
Multiwalled Carbon ◽  
Mild Conditions ◽  
Uniform Coating ◽  
Modification Process ◽  
Aqueous Core

Millimeter-scale calcium alginate aqueous core capsules (mm-CaSA-Caps) are suitable for embedding of temperature and chemical sensitive substances because of its excellent biocompatibility and biodegradability. In this study, mm-CaSA-Caps were coated with multiwalled carbon nanotubes (MWNTs) via in situ self-polymerization of dopamine (DA) under mild conditions. During the modification process, mm-CaSA-Caps transferred quickly from colorless and transparent capsules to dark and opaque “pearls” in 15 min. The obtained MWNTs-polydopamine- (PDA-) modified mm-CaSA-Caps (mm-MWNTs-PDA@CaSA-Caps) retained the spherical appearance of mm-CaSA-Caps with uniform coating of MWNTs-PDA. Obviously, the MWNTs were easily coated on the mm-PDA@CaSA-Caps due to the strong adhesive property of PDA. As the MWNTs content increased, the stacking density of MWNTs on surface of the mm-MWNTs-PDA@CaSA-Caps raised. The water loss ratio of mm-MWNTs-PDA@CaSA-Caps was enhanced ascribed to increasing the path length of water by raising stacking density of MWNTs. This study provided a new path for enhancement of the barrier property of hydrogel capsules.

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