Water-polymer interactions

The interaction between polymer matrix and filler leads to the formation of a bound polymer in close proximity to the reinforcing filler, which restricts the solvent uptake [13]. The composites containing acetylated cellulose fillers exhibited higher uptake of toluene compared to water in accordance with their hydrophobic nature. 

Change in temperature —> change in polymer-polymer and water-polymer interactions —> change in swelling —> change in release of drug... 

In the case of water/polymers interactions, several heterogeneous systems are based on, for example, hydrogels, soils, foodstuffs, etc. and... 

The models tested in more detail in this work were the 1-2-3, 1-2-3-4, 1-2-4-8 and 1-2-4-8-12 models, where the numbers refer to the types of polymers proposed. The 1-2-4-8-12 model gave the best results, the parameters of which are shown in Table 1. The interaction parameters k.. of Eqn.(2) between the different water polymers were all set to zero. 

The interaction parameters k. i = 1,5 between the cross-dimer and all the water polymers were taken as zero and those between water and the active component, k, 6> i = 1,5, were estimated by analogy with the interaction parameters found for previously investigated systems. 

Donescu, D., Ciupitoiu, A., Gosa, K. Languri, L, 1993, Water Polymer Interaction During Emulsion Polymerization of Vinyl Acetate, Revue Roumcane de Chimie, 38(12), 1441-1448. 

Edsman, K., Sundelof, L.-O. (1987). Determination of thermodynamic interaction in mixed polymer solutions by a rapid and precise osmotic method the system dex-tran/polyvinyl-pyrrolidone/water. Polymer, 28, 2261-2214. 

A simple analytical procedure will enable us to guide the development of a number of alternative polymethanes. The fields in which we typically work involve the interactions of polymers and water. In environmental and biotechnology applications that will play an important part in our discussions, the association with water is critical to the function of the polymer, and a test to gauge this relationship will be very useful. 

In this chapter, temperature responsive swelling-shrinking changes in hydrogels were reviewed from the view point of polymer-water interaction and polymer-polymer interaction. In particular, characteristics of interpenetrating polymer networks (IPN) constructed of two distinct polymers which lead to novel temperature-responsive swelling changes were discussed... 

Polymer complexation frequently leads to dehydration and precipitation of polymer [15-32] as shown in Fig, 2. To cause polymer complexation, attractive forces between polymers are needed, and the force must overwhelm the strength of interaction between polymer chains and hydrating water molecules. In this process, water molecules must be replaced by competing polymer contacts. 

Molyneux P (1984) Interactions between polymers. In Water-soluble synthetic polymers Properties and behavior, vol II, CRC Press, Boca Raton, FL, USA, p 159... 

MacKenzie, A. P., Rasmussen, D. H. Interactions in the water-polyvinylpyrrolidone system at low temperatures, In Jellinek, H. H. G. ed. Water Structure at the Water-Polymer Interface. New York Plenum Publishing, 1972, pp. 146-172. 

Adhesive Interactions Between Polymer Surfaces in Water... 

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