Diffusion Performance of Fertilizer Nutrient through Polymer Latex Film

2017 ◽  
Vol 65 (50) ◽  
pp. 10868-10874 ◽  
Author(s):  
Di An ◽  
Ling Yang ◽  
Boyang Liu ◽  
Ting-Jie Wang ◽  
Chengyou Kan
Keyword(s):  
Latex Film ◽  
Polymer Latex

An overview of polymer latex film formation and properties

2000 ◽  
Vol 86 (3) ◽  
pp. 195-267 ◽  
Author(s):  
P.A. Steward ◽  
J. Hearn ◽  
M.C. Wilkinson
Keyword(s):  
Film Formation ◽  
Latex Film ◽  
Latex Film Formation ◽  
Polymer Latex

Studies on polymer latex films: I. A study of latex film morphology

1991 ◽  
Vol 24 (2) ◽  
pp. 87-94 ◽  
Author(s):  
B. J. Roulstone ◽  
M. C. Wilkinson ◽  
J. Hearn ◽  
A. J. Wilson
Keyword(s):  
Latex Film ◽  
Film Morphology ◽  
Latex Films ◽  
Polymer Latex

Recent Applications of Nonradiative Energy Transfer to Polymer Studies

1993 ◽  
Vol 58 (10) ◽  
pp. 2266-2271 ◽  
Author(s):  
Herbert Morawetz
Keyword(s):  
Energy Transfer ◽  
Polymer Chain ◽  
Cluster Formation ◽  
Nonradiative Energy Transfer ◽  
Molecular Cluster ◽  
Fluorescent Labels ◽  
Latex Particles ◽  
Polymer Latex

Recent studies of polymers in solution and in bulk by energy transfer between two fluorescent labels are reviewed. Such studies are concerned with the equilibrium and dynamics of polymer chain expansion, molecular cluster formation in solution, the miscibility of polymers in bulk, and the interdiffusion of polymer latex particles.

scholarly journals Tracking Hydroplasticization by DSC: Movement of Water Domains Bound to Poly(Meth)Acrylates during Latex Film Formation

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2500
Author(s):  
Sebastian M. Dron ◽  
Maria Paulis
Keyword(s):  
Itaconic Acid ◽  
Water Resistance ◽  
Film Formation ◽  
Latex Film ◽  
Water Molecules ◽  
Acrylate Copolymer ◽  
Volatile Organic ◽  
Minimum Film Formation Temperature ◽  
Latex Film Formation ◽  
Formation Step

The film formation step of latexes constitutes one of the challenges of these environmentally friendly waterborne polymers, as the high glass transition (TG) polymers needed to produce hard films to be used as coatings will not produce coherent films at low temperature. This issue has been dealt by the use of temporary plasticizers added with the objective to reduce the TG of the polymers during film formation, while being released to the atmosphere afterwards. The main problem of these temporary plasticizers is their volatile organic nature, which is not recommended for the environment. Therefore, different strategies have been proposed to overcome their massive use. One of them is the use of hydroplasticization, as water, abundant in latexes, can effectively act as plasticizer for certain types of polymers. In this work, the effect of three different grafted hydroplasticizers has been checked in a (meth)acrylate copolymer, concluding that itaconic acid showed the best performance as seen by its low minimum film-formation temperature, just slightly modified water resistance and better mechanical properties of the films containing itaconic acid. Furthermore, film formation monitoring has been carried out by Differential Scanning Calorimety (DSC), showing that itaconic acid is able to retain more strongly the water molecules during the water losing process, improving its hydroplasticization capacity.

Effect of Filler Dispersion on Tensile Strength and Tearing Energy of Natural Rubber (NR) Latex Films

2015 ◽  
Vol 1134 ◽  
pp. 56-60 ◽  
Author(s):  
Siti Aisyah Jarkasi ◽  
Dzaraini Kamarun ◽  
Azemi Samsuri ◽  
Amir Hashim Md Yatim
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Latex Film ◽  
High Tensile Strength ◽  
Latex Films ◽  
Optimum Amount ◽  
Dispersing Agent ◽  
Two Factors ◽  
Filler Dispersion ◽  
Tearing Energy

Fillers play important roles in enhancing mechanical properties of NR latex films. The effect of filler dispersion and amount of dispersing agent to the tensile strength and tearing energy of NR latex films were investigated in this study. The studies were carried out by (i) varying the amount of dispersing agent (Anchoid) added which is an anionic surfactant; and (ii) varying the speed of stirring during mixing of latex with compounding ingredients. It was observed that tensile strength and tearing energy were affected by both factors listed. In the case of NR latex film filled with 10 pphr of carbon black (Super Abrasion Furnace, SAF), the optimum stirring speed was 400 rpm and the optimum amount of surfactant was in the range of 5 to 10 % by weight. High tensile strength ranging from 29 - 31 MPa and high tearing energies ranging from 90.6 - 111.0 kJ/m2were achieved from optimization of these two factors; rendering their importance.

Contact of Polymer Latex Particles with Metals

1987 ◽  
Vol 22 (1) ◽  
pp. 39-48 ◽  
Author(s):  
K. Kendall ◽  
J. C. Padget
Keyword(s):  
Latex Particles ◽  
Polymer Latex

scholarly journals Styrene–Acrylic Emulsion with “Transition Layer” for Damping Coating: Synthesis and Characterization

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1406
Author(s):  
Daoyuan Chen ◽  
Mingjin Ding ◽  
Zhixiong Huang ◽  
Yanbing Wang
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Transition Layer ◽  
Testing Machine ◽  
Dynamic Mechanical Properties ◽  
Mechanical Analysis ◽  
Latex Film ◽  
Seeded Emulsion Polymerization ◽  
Acrylic Emulsion ◽  
Dynamic Mechanical

In order to study the dynamic mechanical properties of styrene–acrylic latex with a core/shell structure, a variety of latexes were synthesized by semi-continuous seeded emulsion polymerization based on “particle design” with the same material. The latexes were characterized by rotary viscosimeter, dynamic light scattering (DLS), Fourier transform infrared spectroscopy (FTIR), transmission electron microscope (TEM), dynamic mechanical analysis (DMA), and universal testing machine. The effects of difference at the glass transition temperature (Tg) of core and shell and the introduction of the “transition layer” on the damping and mechanical properties of latex film were studied. The results indicate that as the Tg of core and shell gets closer, the better the compatibility of core and shell, from phase separation to phase continuity. Furthermore, the introduction of the “transition layer” can effectively improve the tensile strength and tan δ (max) of the latex film. The tensile strength and maximum loss factor (f = 1 Hz) of latex with the “transition layer” increased by 36.73% and 29.11% respectively compared with the latex without the “transition layer”. This work provides a reference for the design of emulsion for damping coating.

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