Effects of adhesive type and polystyrene concentration on the shear strength of bonded polystyrene/high-density polyethylene blends

Cherian, Zeena; Lehman, Richard

doi:10.1016/j.ijadhadh.2005.02.001

Cited by 11 publications

(6 citation statements)

References 3 publications

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“…Lap joints bonded with hexyl-MA homopolymer showed delamination/adhesive failure. 60 The origin of this failure mechanism (viz-a-viz cohesive failure) is the high elongation at break and high toughness of this material (Table 4), which are the highest for all 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 17 tested materials. With increasing UPy concentration, an increasing cohesive component to the failure mode can be observed, which is probably associated with the decreasing elongation at break (Figure 3, Table 4).…”

Section: Table 4 Mechanical Data Of Poly(upy-hmdi-hema-co-hexyl-ma) mentioning

confidence: 99%

Supramolecular Cross-Links in Poly(alkyl methacrylate) Copolymers and Their Impact on the Mechanical and Reversible Adhesive Properties

Heinzmann

Salz

Moszner

et al. 2015

ACS Appl. Mater. Interfaces

113

105

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Hydrogen-bonded, side-chain-functionalized supramolecular poly(alkyl methacrylate)s were investigated as light- and temperature-responsive reversible adhesives that are useful for bonding and debonding on demand applications. Here, 2-hydroxyethyl methacrylate (HEMA) was functionalized with 2-ureido-4[1H]pyrimidinone (UPy) via a hexamethylenediisocyanate (HMDI) linker, to create a monomer (UPy-HMDI-HEMA) that serves to form supramolecular cross-links by way of forming quadruple hydrogen bonded dimers. UPy-HMDI-HEMA was copolymerized with either hexyl methacrylate or butyl methacrylate to create copolymers comprising 2.5, 5, or 10 mol % of the cross-linker. The mechanical properties of all (co)polymers were investigated with stress-strain experiments and dynamic mechanical analysis. Furthermore, the adhesive properties were studied at temperatures between 20 and 60 °C by testing single lap joints formed with stainless steel substrates. It was found that increasing the concentration of the UPy-HMDI-HEMA cross-linker leads to improved mechanical and adhesive properties at elevated temperatures. Concurrently, the reversibility of the bond formation remained unaffected, where rebonded samples displayed the same adhesive strength as regularly bonded samples. Debonding on demand abilities were also tested exemplarily for one copolymer, which for light-induced debonding experiments was blended with a UV-absorber that served as light-heat converter. Single lap joints were subjected to a constant force and heated or irradiated with UV light until debonding occurred. The necessary debonding temperature was comparable for direct heating and UV irradiation and varied between 28 and 82 °C, depending on the applied force. The latter also influenced the debonding time, which under the chosen conditions ranged from 30 s to 12 min.

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Section: Table 4 Mechanical Data Of Poly(upy-hmdi-hema-co-hexyl-ma) mentioning

confidence: 99%

Supramolecular Cross-Links in Poly(alkyl methacrylate) Copolymers and Their Impact on the Mechanical and Reversible Adhesive Properties

Heinzmann

Salz

Moszner

et al. 2015

ACS Appl. Mater. Interfaces

113

105

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“…Figure d shows the adhesion strength of BC interlamination. The value is 0.7 MPa, with similar shear strength values for epoxy adhesive bonding polystyrene (PS)/high-density polyethylene (HDPE) blends, which reached the interior plywood requirement of the China National Standard (GB/T 9846-2015) …”

Section: Resultsmentioning

confidence: 58%

“…The value is 0.7 MPa, with similar shear strength values for epoxy adhesive bonding polystyrene (PS)/high-density polyethylene (HDPE) blends, which reached the interior plywood requirement of the China National Standard (GB/T 9846-2015). 46 In another approach, we had attempted to shatter the BC hydrogel into tiny pieces and then heat and press them to form sheets of ACCs of BC (Figure 5b). The tensile strength of ACCs prepared by crushed BC is 104.3 ± 10.3 MPa, which is higher than that of the other conventional polymers.…”

Section: Resultsmentioning

confidence: 99%

Robust All-Cellulose Nanofiber Composite from Stack-Up Bacterial Cellulose Hydrogels via Self-Aggregation Forces

Ren

et al. 2020

J. Agric. Food Chem.

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All-cellulose composites are usually prepared by removing impurities and using a surface-selective dissolution approach, which detract significantly from their environment-friendly properties. In this paper, we report an environment-friendly approach to fabricate all-cellulose nanofiber composites from stack-up bacterial cellulose (BC) hydrogels via self-aggregation forces of the hydrogen bond by water-based processing. Structural and mechanical properties of BC-laminated composites have been investigated. The results indicated that BC composites possess the structure of all nanofibers, a tensile strength of 116 MPa, and a storage modulus of 25 GPa. Additionally, the interfacial shear strength and tensile strength of piece-hot-press BC demonstrate the strong self-aggregation forces of BC nanofibers. Thus, BC-laminated composites will be attractive in structural material.

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“…Interestingly, the blank set without fly-ash showed more tensile strength than those with fly-ash. It may be attributed to the efficient bonding of the two polymers [8,9] The MOR (Modulus of Rupture) values of the samples are tabulated below. From Table-5 it is observed that the mechanical properties are comparable with the ceramic tiles.…”

Section: Methodmentioning

confidence: 99%

Development of construction material from waste plastics and fly ash

Chakrabarti

2020

Preprint

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With advancement of civilization, use of plastic is increasing. Consequently a huge amount of plastic waste is generated. In India 26000 tonnes per day of plastic waste was generated in 2017-18. Polyethylene and expanded polystyrene foam are extensively used for packaging which create environmental pollution when discarded. Fly-ash is another solid waste generated from thermal power plants. This particulate solid waste contaminates air water and soil. Aim of the present research was to prepare a value-added product from all these waste materials to establish a waste-to-wealth process. A tile-like structure has been prepared my melt-mixing and subsequent compression-moulding using plastic carry-bags, thermocol (expanded polystyrene foam) and fly-ash. Tensile and flexural strengths along with the solvent absorption capacity were determined and compared with ceramic wall tiles.

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Effects of adhesive type and polystyrene concentration on the shear strength of bonded polystyrene/high-density polyethylene blends

Cited by 11 publications

References 3 publications

Supramolecular Cross-Links in Poly(alkyl methacrylate) Copolymers and Their Impact on the Mechanical and Reversible Adhesive Properties

Supramolecular Cross-Links in Poly(alkyl methacrylate) Copolymers and Their Impact on the Mechanical and Reversible Adhesive Properties

Robust All-Cellulose Nanofiber Composite from Stack-Up Bacterial Cellulose Hydrogels via Self-Aggregation Forces

Development of construction material from waste plastics and fly ash

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