Influence of intraparticle cross-linking on polymer diffusion in latex films prepared from secondary dispersions

Liu, Yang; Tran, Kenneth; Ho, Keith; Emsermann, Jessica; Zhang, Margaret; Silva, Pietro Paolo de Oliveira; Walker, Gilbert C.; Lucas, Frédéric; Soleimani, Mohsen; Winnik, Mitchell A.

doi:10.1016/j.porgcoat.2021.106691

Cited by 5 publications

(5 citation statements)

References 31 publications

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“…29 They showed that the non-cross-linked sample had a greater extent of polymer diffusion than the cross-linked samples. 34 This finding is supported by Adams et al, 35 who reported that polymer interdiffusion is impeded because the chains are cross-linked prior to film formation. These studies concluded that skin formation can be weakened/avoided by an appropriate crosslinking structure.…”

Section: ■ Introductionmentioning

confidence: 64%

“…The diffusion extent of cross-linked and non-cross-linked polymers in the formed latex films were monitored via fluorescence resonance energy transfer. ,, Water trapped under the skin slowed the onset of subfilm coalescence and diffusion of polymers, which in turn acted as a plasticizer to increase the diffusion rate of polymers . They showed that the non-cross-linked sample had a greater extent of polymer diffusion than the cross-linked samples . This finding is supported by Adams et al, who reported that polymer interdiffusion is impeded because the chains are cross-linked prior to film formation.…”

Section: Introductionmentioning

confidence: 80%

“…In addition, Winnik et al reviewed the fundamental principles of polymer films cross-linking, and reaction mechanisms of the competition between bond formation and polymer diffusion in latex films. The diffusion extent of cross-linked and non-cross-linked polymers in the formed latex films were monitored via fluorescence resonance energy transfer. ,, Water trapped under the skin slowed the onset of subfilm coalescence and diffusion of polymers, which in turn acted as a plasticizer to increase the diffusion rate of polymers . They showed that the non-cross-linked sample had a greater extent of polymer diffusion than the cross-linked samples .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Film-Formation and Binder-Free Pigment Printing of Fluorosilicone-Modified Polyacrylate/Pigment Hybrid Latex: Effect of Cross-Linking Degree

Lin

Duan

et al. 2023

ACS Appl. Polym. Mater.

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Binder-free pigment dyeing/printing of textiles is a type of environmentally friendly and clean production technology that utilizes polymer/pigment hybrid latex. Although it has widespread use, the manner in which the nature of the hybrid latex influences the film formation and how systems can be designed to improve softness and air-permeability is still unclear. In this study, we synthesized a series of fluorosilicone-modified polyacrylate/pigment hybrid latexes to explore how cross-linking degree affects film-formation behavior and binder-free pigment printing performance on fabric, where the cross-linking structure is controlled by a silane coupling agent. Our results show that the cross-linking degree of the fluorosilicone-modified polyacrylate chain plays a vital role in chain diffusion, latex particle packing, and deformation. Further, it controls "skin" formation during the process of hybrid latex drying. The dried hybrid films not only have homogeneity and good barrier performance but also exhibit a soft state (low T g , − 28.3 °C) owing to the silicone chain segment and bound water with a plasticizing effect. Interestingly, our results show that the cross-linking degree of hybrid latex particles changes as a function of the morphology of the printed polyester (PET) fiber. Further, as a result of the improvement of the softness and airpermeability of the binder-free printed PET fabric, the surface of single yarns is uniformly wrapped by hybrid films with a high crosslinking degree. These insights allow for effective development of textile pigment printing technology controlled by the film-formation behavior of hybrid latex.

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Section: ■ Introductionmentioning

confidence: 64%

Section: Introductionmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

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Film-Formation and Binder-Free Pigment Printing of Fluorosilicone-Modified Polyacrylate/Pigment Hybrid Latex: Effect of Cross-Linking Degree

Lin

Duan

et al. 2023

ACS Appl. Polym. Mater.

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“…The quenching of emission by the acceptor fluorophore only occurs when the donor and acceptor molecules are within ∼10 nm. In polymer systems, this has commonly been used to study the mixing of polymer chains as a function of time − and evaluate the exchange dynamics of amphiphilic polymer chains between aggregates. ,, In combination with measurements from dynamic light scattering (DLS), static light scattering (SLS), and transmission electron microscopy, it is evident that BRCs in the composition range of interest self-assemble into low chain number aggregates (below 40–50 chains; an order of magnitude lower than analogous block copolymers), as opposed to self-folding into single-chain nanoparticles as previously suggested. By developing a fundamental understanding of BRC solution properties, the full potential of these materials can be reached, and their behavior in emulsion polymerization systems, where the initial morphology and exchange dynamics of polymeric stabilizers will impact nucleation mechanisms, will be more thoroughly understood.…”

Section: Introductionmentioning

confidence: 96%

Amphiphilic Block-Random Copolymers: Shedding Light on Aqueous Self-Assembly Behavior

et al. 2023

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The aqueous solution and aggregation behavior of polystyrene-b-poly[styrene-r-(acrylic acid)] block-random copolymers have been examined. Previous work conducted by our group showed that these materials exhibit an unanticipated ease of dispersion in water compared to polystyrene-b-poly(acrylic acid) block copolymers of similar molecular weight and composition. Herein, fluorescence labeling experiments and the presence of a critical aggregation concentration suggest the self-assembly of these materials into multichain aggregates as opposed to the self-folding behavior that was previously hypothesized. In our analysis, we demonstrate that caution must be used when interpreting particle size data from dynamic light scattering with polyelectrolyte solutions and that other characterization methods should be used to confirm findings. The fundamental understanding of block-random copolymer solution properties enables the widespread application of these easily dispersible materials in fields where amphiphilic copolymers are of interest, including biomedicine, catalysis, and stabilizers in emulsion polymerization.

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“…Materials are being continuously and exponentially modified and improved in all fields of use, such as polymers [1][2][3][4][5][6], ceramics [7][8][9][10] and so on. Crosslinking is one of the most popular methodes to alter the behavior of biodegradable starch polymers [11,12]. Crosslinking or cross-ligation is interconnection of linear or branched chains in a polymer.…”

Section: Introductionmentioning

confidence: 99%

Crosslinking of Starch Using Citric Acid

Gerezgiher

Szabó

2022

J. Phys.: Conf. Ser.

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With a purpose of improving mainly the water resistivity and related physical and mechanical property of starch biopolymer, citric acid was used to modify the chemical structure of starch by crosslinking the polymer chains. Corn starch films were produced first dispersing 4% (w/w) starch in water, adding glycerol (36% of the weight of starch) and citric acid (20% of the weight starch) successively allowing them to react at different pH. Water absorption, FTIR, DMA, DSC and SEM tests were done to characterize the thin film samples. Results showed that availability of glycerol is a critical factor for the crosslinking and plasticity property of the film. Samples prepared with citric acid crosslinked starch without the inclusion of glycerol were brittle and has easily disintegrated in water as crystals. The crosslinking reaction done under acidic condition was found more effective than the other reactions. Generally, citric acid has effectively crosslinked corn starch polymer molecules reducing the amount of hydroxyl group in their structure. As a result improvement in the water resistant is observed.

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Influence of intraparticle cross-linking on polymer diffusion in latex films prepared from secondary dispersions

Cited by 5 publications

References 31 publications

Film-Formation and Binder-Free Pigment Printing of Fluorosilicone-Modified Polyacrylate/Pigment Hybrid Latex: Effect of Cross-Linking Degree

Film-Formation and Binder-Free Pigment Printing of Fluorosilicone-Modified Polyacrylate/Pigment Hybrid Latex: Effect of Cross-Linking Degree

Amphiphilic Block-Random Copolymers: Shedding Light on Aqueous Self-Assembly Behavior

Crosslinking of Starch Using Citric Acid

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