Poly brushes adhesion

When stimuli-responsive polymers are attached to a surface, changes in the physicochemical properties of the surface layer that result from an external stimulus can be assessed by AFM in situ. Micropattemed thermoresponsive polymers, such as poly(A-isopropylacrylamide) (PNIPAm), were characterized via AFM height imaging and the brush adhesiveness measured by force spectroscopy during... 

Poly- Toluene, 1. Abrasion followed by brushing. Adhesion improved by... 

Poly(vinyl acetate) dry resins and ethylene-vinyl acetate (EVA) copolymers are used in solvent adhesives, which can be applied by total industrial techniques, e.g., brushing, knife-coating, roller-coating, spraying, or dipping... 

Initial adhesion tests were made with 3.5- X 1- X 0.064-inch specimens of aluminum (Aluminum Associates No. 2024) and cold-rolled steel (polished ASTM A-415). Later tests were made with strips of copper, chrome-coated steel (Weirton Steel Co.), and brass with molded nylon 66 bars and with Mylar 300A poly (ethylene terephthalate) film. Before use, the specimens were washed (scrubbed with a soft bristle brush) with a solution of Alconox detergent, rinsed with water, rinsed with acetone, and dried. 

Thermally responsive polymers, such as poly( V-isopropyl acrylamide) (NI-PAm), have also been studied extensively for applications related to those previously discussed [112], De las Heras et al. described the synthesis and patterning of NIPAm brushes on SAMs and their subsequent performance during temperature-dependent adhesion assays of BSA and Streptococcus mutans (Fig. 7). The authors employed p.CP to pattern features of hydrophobic hexadecanethiol and backfilled the surface with an initiator-functionalized alkanethiol. Polymer brushes were grown via surface-initiated atom transfer radical polymerization (ATRP). FITC-BSA was then... 

A. Roosjen, H. C. van der Mei, H. J. Busscher, and W. Norde, Microbial adhesion to poly (ethylene oxide) brushes influence of polymer chain length and temperature, Langmuir 20, 10949-10955 (2004). 

Busscher HJ, Kaper HJ, Norde W. 2003. Characterization of poly(ethylene oxide) brushes on glass surfaces and adhesion of Staphylococcus epidermidis. J Biomater Sci Polym Ed 74 313-324. 

Jones DM, Smith JR, Huck WTS, Alexander C. Variable adhesion of micropattemed ther-moresponsive polymer brushes AFM investigations of poly(V-isopropylacrylamide) brushes prepared by surface-initiated polymerizations. Adv Mater 2002 14(1 Q 1130—4. 

Many workers have examined the effect of surfactants and polymers adsorbed on mica. For example, polymers such as poly(vinyl pyridine) and its copolymers have been adsorbed on mica and their interfacial interactions measured in liquid media. Forces measured between these surfaces are of much longer range and provided some evidence for the brush conformation of polymers. Other workers have used industrially generated polymer films mounted directly to the glass lenses in the SFA and examined their adhesion... 

For tile fabrication of interfaces with precise control of cell adhesion, the NITEC conjugation protocol was combined with the resistance of poly(oligoethylene glycol methyl ether metiiacrylate) (poly(MeOEGMA)) brushes and the versatility of bioinspired PDA surfaces (see Figure 9.7). 

ROD 13] Rodriguez-Emmenegger C., Preuss C.M., Yameen B. et al, Controlled Cell Adhesion on Poly(dopamine) Interfaces Photopattemed with Non-Fouling Brushes , ArfEancet/A/ofmoA, vol. 25, pp. 6123-6127, 2013. 

Used to facilitate multiple repositioning of the lateral tape without tearing the back sheet, frontal tapes are made of PP film and attached to the front of the diaper with adhesive. Their use has helped to reduce the thickness of the poly film without the risk of potential tears associated with the opening of the lateral tapes from the back sheet. In premium diapers, a special loop system has been developed in order to use Velcro type fasteners (also called the hook and loop system). This loop tape can use a locked loop or a brushed loop in order to provide a softer texture or a stronger grip. 

To regulate microbial adhesion, mixed brashes of PEG and a positively charged polymer, P2VP or quartemized poly(2-vynil pyridine) (QP2VP) were investigated and compared with homo polymer brushes of the respective components (Zdyrko et al., 2009). Only with PEG brush, almost aU the bacteria Staphylococcus aureus)... 

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