Effect of Molecular Weight on Performance Properties of Pressure-Sensitive Adhesive of Poly (2-ethylhexyl acrylate) Synthesized by RAFT-Mediated Miniemulsion Polymerization

2015 ◽  
Vol 92 (3) ◽  
pp. 236-256 ◽  
Author(s):  
Raghunath P. Ingale ◽  
Ramanand N. Jagtap ◽  
Ravindra V. Adivarekar
Keyword(s):  
Molecular Weight ◽  
Miniemulsion Polymerization ◽  
Pressure Sensitive Adhesive ◽  
Performance Properties ◽  
Pressure Sensitive

scholarly journals Biodegradability of lactide–caprolactone macromonomers in wastewater

BioResources ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. 4081-4092
Author(s):  
Roderquita K. Moore ◽  
Roland Gleisner ◽  
Carl J. Houtman
Keyword(s):  
Molecular Weight ◽  
Weight Loss ◽  
Pharmaceutical Products ◽  
Proton Nuclear Magnetic Resonance ◽  
Pressure Sensitive Adhesive ◽  
Magnetic Resonance Data ◽  
Pressure Sensitive ◽  
Weight Loss Data ◽  
Resonance Data ◽  
Alternative Material

A desire to develop biorenewable materials has led to lactide–caprolactone copolymers being used in adhesive, medical, and pharmaceutical products. Use of this alternative material may diminish human impact on the environment and create products that are biocompatible. One advantage of these materials compared with other typical petroleum-based polymers is that they are easily degraded by microorganisms. In this study, the biodegradation of representative lactide–caprolactone macromonomers and an acrylic pressure sensitive adhesive incorporating these macromonomers was followed by a respirometric method using a consortium of microorganisms found in a typical wastewater treatment facility. The weight loss data of lactide–caprolactone macromonomers showed that the lowest molecular weight macromonomers with a high percentage of lactide had the greatest weight loss, which could have been caused by the greater number of ester linkages. Proton nuclear magnetic resonance data showed that for lower molecular weight copolymers, there was a preferential loss of caprolactone. Promisingly, testing of the full acrylic adhesives showed that they were easily degraded and thus provided a route to more environmentally friendly adhesive products.

scholarly journals Photoresponsive, switchable, pressure-sensitive adhesives: influence of UV intensity and hydrocarbon chain length of low molecular weight azobenzene compounds

RSC Advances ◽  
2021 ◽  
Vol 11 (59) ◽  
pp. 37392-37402
Author(s):  
Tae-Hyung Lee ◽  
Gi-Yeon Han ◽  
Mo-Beom Yi ◽  
Jae-Ho Shin ◽  
Hyun-Joong Kim
Keyword(s):  
Molecular Weight ◽  
Adhesion Force ◽  
Hydrocarbon Chain ◽  
Low Molecular Weight ◽  
Pressure Sensitive Adhesive ◽  
Pressure Sensitive Adhesives ◽  
Pressure Sensitive ◽  
Hydrocarbon Chain Length ◽  
Low Molecular Weight Compounds ◽  
Uv Visible

A photoresponsive switchable pressure-sensitive adhesive (PSA) was fabricated with an azobenzene-containing polymer and low molecular weight compounds. Its adhesion force was activated/deactivated rapidly by UV/visible light irradiation.

scholarly journals Synthesis of Acrylic−Polyurethane Hybrid Latexes by Miniemulsion Polymerization and Their Pressure-Sensitive Adhesive Applications

2011 ◽  
Vol 44 (8) ◽  
pp. 2632-2642 ◽  
Author(s):  
Ravindra Udagama ◽  
Elise Degrandi-Contraires ◽  
Costantino Creton ◽  
Christian Graillat ◽  
Timothy F. L. McKenna ◽  
...  
Keyword(s):  
Miniemulsion Polymerization ◽  
Pressure Sensitive Adhesive ◽  
Pressure Sensitive ◽  
Acrylic Polyurethane

Study on Preparation and Properties of Pressure Sensitive Adhesive of Acrylate Prepared by Miniemulsion

2011 ◽  
Vol 183-185 ◽  
pp. 1938-1941
Author(s):  
Jiu Yin Pang ◽  
Chuan Sun ◽  
Shi Cheng Zhang ◽  
Zhen Xing
Keyword(s):  
Molecular Weight ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Vinyl Acetate ◽  
Butyl Acrylate ◽  
Peel Strength ◽  
Excellent Performance ◽  
Pressure Sensitive Adhesive ◽  
Pressure Sensitive

Miniemulsion was prepared by means of different ratio of butyl acrylate with vinyl acetate emulsion pressure sensitive adhesive excellent performance. Focused on acrylic acid and vinyl acetate copolymers of different proportions of the glass transition temperature, molecular weight and molecular weight distribution of micro-factors, and build the macroscopic properties of the copolymer glass transition temperature and molecular weight between contacts. The use of APS as initiator under the conditions of the experiment found that with the increase of acrylic, PVC-floor, 180 peel strength composite materials decreased. While the molecular weight of butyl acrylate with the increase of the amount did not change significantly, the initial viscosity of the polymer and 180 º peel strength is improved, but the adhesive holding down quickly.

Study of acrylic emulsion for ultraviolet curable pressure sensitive adhesives and its properties

2011 ◽  
Vol 40 (6) ◽  
pp. 374-378 ◽  
Author(s):  
Nishant Bhore ◽  
Prakash Mahanwar
Keyword(s):  
Uv Curing ◽  
Cohesive Strength ◽  
Pressure Sensitive Adhesive ◽  
Acrylic Emulsion ◽  
Uv Curable ◽  
Performance Properties ◽  
Content Type ◽  
Pressure Sensitive ◽  
Water Based ◽  
Peel Adhesion

PurposeThe purpose of this paper is to synthesise UV curable emulsion latex and to study characteristics and various performance properties such as tackiness, peel adhesion and cohesive strength for pressure sensitive adhesive (PSA) application after UV curing.Design/methodology/approachThe two component water‐based ultraviolet (UV) curable acrylate PSAs were synthesised by emulsion copolymerization. The synthesised emulsion samples were characterised and various performance properties such as tackiness, peel adhesion and cohesive strength for PSAs were tested after UV curing.FindingsThe thermal analysis showed the effect of methyl methacrylate (MMA) content on the glass transition temperature of emulsions, which had significant effect on tack. Effects of varying concentration of multifunctional monomer trimethylolpropane triacrylate (TMPTA) and UV exposure time on properties of UV curable PSA were also studied.Research limitations/implicationsThe results associated with the UV curable water based PSA has certain advantages, such as low VOC and fast curing rate and with the scope for further research by using the radiations with different intensities or other radiation systems such as electron beam curing.Practical implicationsPractically the UV water based PSAs are already in industrial use for glass lamination, silicon semiconductor dicing, and in medical use for band aids and drug delivery systems and for dental applications for cavity filling.Originality/valueThe water based UV curable PSA synthesised by emulsion polymerization had very good tackiness properties with lower MMA content. It was observed that the lower the concentration of TMPTA, the better the performance properties, such as tack and peel strength. It was also observed that with increasing TMPTA concentration the cohesive strength increased.

The Entanglement Plateau in the Dynamic Modulus of Rubbery Styrene—Diene Block Copolymers. Significance to Pressure-Sensitive Adhesive Formulations

1979 ◽  
Vol 52 (2) ◽  
pp. 278-285 ◽  
Author(s):  
G. Kraus ◽  
K. W. Rollmann
Keyword(s):  
Molecular Weight ◽  
Block Copolymers ◽  
Simple Procedure ◽  
Continuous Phase ◽  
Low Molecular Weight ◽  
Glass Transitions ◽  
Pressure Sensitive Adhesive ◽  
Pressure Sensitive Adhesives ◽  
Pressure Sensitive ◽  
Dynamic Storage

Abstract Styrene-diene (butadiene or isoprene) block copolymers of the SDS or (SD−)x type exhibit a plateau in the dynamic storage modulus located between the glass transitions of the polydiene and polystyrene domains. When the polydiene is the continuous phase, the height of this plateau can be estimated with good success from the entanglement spacing molecular weight of the polydiene and the filler effect of the polystyrene domains. The effect of introduction of a center block-compatible diluent can also be calculated, although the simple procedure used here tends to underestimate the plasticizer effect, particularly at high diluent concentration. Nevertheless, the calculation furnishes a useful criterion of compatibility of the polydiene center blocks and low molecular weight resins used commonly as tackifiers in pressure-sensitive adhesives. Center block compatibility is essential for the development of tack in these compositions.

Passivation of pressure sensitive adhesive stickies by addition of acrylic fibers to OCC pulp before papermaking

TAPPI Journal ◽  
2016 ◽  
Vol 15 (10) ◽  
pp. 631-639
Author(s):  
MOHAMMAD HADI ARYAIE MONFARED ◽  
HOSSEIN RESALATI ◽  
ALI GHASEMIAN ◽  
MARTIN A. HUBBE
Keyword(s):  
Adverse Effects ◽  
Control Sample ◽  
Pressure Sensitive Adhesive ◽  
Acrylic Fiber ◽  
Burst Strength ◽  
Pressure Sensitive Adhesives ◽  
Pressure Sensitive ◽  
Tear Index ◽  
Breaking Length ◽  
Acrylic Fibers

This study investigated the addition of acrylic fiber to old corrugated container (OCC) pulp as a possible means of overcoming adverse effects of water-based pressure sensitive adhesives during manufacture of paper or paperboard. Such adhesives can constitute a main source of stickies, which hurt the efficiency of the papermaking process and make tacky spots in the product. The highest amount of acrylic fiber added to recycled pulps generally resulted in a 77% reduction in accepted pulp microstickies. The addition of acrylic fibers also increased pulp freeness, tear index, burst strength, and breaking length, though there was a reduction in screen yield. Hence, in addition to controlling the adverse effects of stickies, the addition of acrylic fibers resulted in the improvement of the mechanical properties of paper compared with a control sample.

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