Adhesion and viscoelastic property of poly(ethylene-co-vinyl acetate) based hot melt adhesives- effects of tackifier and wax

Chu, Hsin‐Sen; Huang, Wen‐Nan; Chuang, Kuang Sein; Shen, Bei-Huw

doi:10.1016/j.ijadhadh.2020.102586

Cited by 13 publications

(6 citation statements)

References 12 publications

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“…Usually, the base polymer of a HMA is a polyolefin like ethylene-vinyl acetate (EVA) copolymers or polyethylene (PE). Still, other polymers, such as polyamides, polyesters, polycarbonates, polyurethanes, polypyrrole, and polycaprolactone (PCL) are also used [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. Specifically, PCL is an aliphatic semi-crystalline, biodegradable, easy to process, and cheap fossil-based polyester that can be employed for packaging.…”

Section: Introductionmentioning

confidence: 99%

Rheology and Tack Properties of Biodegradable Isodimorphic Poly(butylene succinate)-Ran-Poly(ε-caprolactone) Random Copolyesters and Their Potential Use as Adhesives

et al. 2022

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The sole effect of the microstructure of biodegradable isodimorphic poly(butylene succinate)-ran-poly(e-caprolactone) random copolyesters on their rheological properties is investigated. To avoid the effect of molecular weight and temperature, two rheological procedures are considered: the activation energy of flow, Ea, and the phase angle versus complex modulus plots. An unexpected variation of both parameters with copolyester composition is observed, with respective maximum and minimum values for the 50/50 composition. This might be due to the peculiar chain configurations of the copolymers that vary as a function of comonomer distribution within the chains. The same chain configuration variations are responsible for the isodimorphic character of the copolymers in the crystalline state. Tack tests, performed to study the viability of the copolyesters as environmentally friendly hot melt adhesives (HMA), reveal a correlation with rheological results. Tackiness parameters, particularly the energy of adhesion obtained from stress-strain curves during debonding experiments, are enhanced as melt elasticity increases. Based on the carried-out analysis, the link microstructure-rheology-tackiness is established, allowing selecting the best performing HMA sample considering the polymer chemistry of the system.

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Section: Introductionmentioning

confidence: 99%

Rheology and Tack Properties of Biodegradable Isodimorphic Poly(butylene succinate)-Ran-Poly(ε-caprolactone) Random Copolyesters and Their Potential Use as Adhesives

et al. 2022

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“…Many polymers are used as bases, the most common being ethylene-vinyl acetate, ethylene-acrylate, or ethylene-acrylic acid copolymers [ 34 , 35 , 36 , 37 ], different polyacrylates [ 38 , 39 ], polyisoprene [ 40 ], polyisobutylene [ 41 ], polyethylene [ 42 ], polyvinyl acetate [ 43 ], polylactide [ 44 ], polyamide [ 45 ], polyurethane [ 46 , 47 , 48 ], and polyester [ 49 ]. The polymer base represents more than half of the composition of adhesives and is responsible for their strength, elasticity, viscosity, and adhesion.…”

Section: Introductionmentioning

confidence: 99%

Hot-Melt and Pressure-Sensitive Adhesives Based on Styrene-Isoprene-Styrene Triblock Copolymer, Asphaltene/Resin Blend and Naphthenic Oil

et al. 2022

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Asphaltene/resin blend (ARB) extracted from heavy crude oil was used to modify poly(styrene-block-isoprene-block-styrene) (SIS) to make it an adhesive. There were prepared double and triple mixtures containing 10–60% SIS, 10–40% ARB, and 10–50% naphthenic oil used as an additional plasticizer. The viscoelasticity of the mixtures at 25 °C and 120 °C was studied, their flow curves were obtained, and the temperature dependences of the loss tangent and the components of the complex modulus were measured. In addition, the mixtures were used as hot-melt adhesives (HMAs) and pressure-sensitive adhesives (PSAs) in the shear, peel, and pull-off tests of the adhesive bonds that they formed with steel. Both naphthenic oil and ARB act as plasticizers for SIS and make it sticky. However, only the combined use of ARB and the oil allows for achieving the best set of adhesive properties of the SIS-based mixture. High-quality HMA requires low oil content (optimal SIS/ARB/oil ratio is 50/40/10, pull-off adhesion strength (τt) of 1990 kPa), whereas a lot of the oil is needed to give SIS characteristics of a PSA (SIS/ARB/oil is 20/40/40, τt of 100 kPa). At the same time, the resulting PSA can be used as a hot-melt pressure-sensitive adhesive (HMPSA) that has many times lower viscosity than HMA (13.9 Pa·s versus 2640 Pa·s at 120 °C and 1 s−1) but provides a less strong adhesive bond (τt of 960 kPa).

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“…Rosin glyceride (RGE) and hydrogenated rosin glyceride (HRGE) have become promising alternatives to petro-based resins due to their renewable, environmentally friendly, nontoxic, and good compatibility properties and are widely used in chewing gum base, plasters, drug film coatings, etc. − RGE and HRGE are bio-based thermoplastic resins synthesized by the esterification of glycerol with rosin or hydrogenated rosin and have similar rigidity to petro-based resins due to their large tricyclic phenanthrene structure. − Rosin is an abundantly renewable resin that is obtained naturally from exudations of pines and conifers or from the tall oil as a byproduct of paper pulp production and is made up of 90% tricyclic phenanthrene resin acids and 10% neutral compounds. − Similar to C9PR, rosin has conjugated double bonds that are easily oxidized, reducing product quality; thus, hydrogenation modification of rosin or RGE is carried out, and then, HRGE with light color and high oxidation stability is synthesized. ,, About 1000 ktons of raw rosin is produced each year, of which 250 ktons of chewing gum base (mainly rosin esters) is produced worldwide every year. ,, As a result, it is important to assess the substitution or blending potential of bio-based and petro-based resins. Typically, adhesiveness, compatibility, color, oxidation stability, and high-temperature stability are important characteristics for industrial applications of bio-based and petro-based resins. ,,,− In terms of compatible and adhesive properties, the application of RGE or HRGE as a substitute for petro-based resins has been reported, such as hot melt adhesives , and pressure-sensitive adhesives. , Besides, based on the color and antioxidant properties, many researchers have focused on the hydrogenation of bio-based and petro-based resins. − , Although some studies concerning the high-temperature stability and pyrolysis kinetics of rosin or dicyclopentadiene resins have been carried out, , the study on the high-temperature stability comparison between bio-based and petro-based resins is still lacking. In addition, to the best of our knowledge, no information on the pyrolysis kinetics and mechanism of RGE, HRGE, C9PR, and HC9PR is available in the open literature.…”

Section: Introductionmentioning

confidence: 99%

“…Typically, adhesiveness, compatibility, color, oxidation stability, and high-temperature stability are important characteristics for industrial applications of bio-based and petro-based resins. 5,9,10,21−24 In terms of compatible and adhesive properties, the application of RGE or HRGE as a substitute for petro-based resins has been reported, such as hot melt adhesives 21,25 and pressure-sensitive adhesives. 22,26 Besides, based on the color and antioxidant properties, many researchers have focused on the hydrogenation of bio-based and petro-based resins.…”

Section: Introductionmentioning

confidence: 99%

High-Temperature Stability and Pyrolysis Kinetics and Mechanism of Bio-Based and Petro-Based Resins Using TG–FTIR/MS

Zhou

Chen

Liang

et al. 2021

Ind. Eng. Chem. Res.

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Pyrolysis behavior of resins is essential for their high-temperature application. Herein, the high-temperature stability and pyrolysis kinetics and mechanism of rosin glyceride (RGE), hydrogenated rosin glyceride (HRGE), C9 petro-based resin (C9PR), and hydrogenated C9 petro-based resin (HC9PR) under a nonoxidizing atmosphere were investigated by thermogravimetry coupled with Fourier transform infrared spectrometry or mass spectrometry (TG−FTIR/ MS) techniques. Friedman and Starink methods as well as reaction-order and truncated Sestak−Berggren models were used to evaluate kinetic and thermodynamic parameters, and results indicated that f(α) = (1 − α) n was the most probable pyrolysis mechanism for different resins. In addition, the average activation energies for pyrolysis of RGE, HRGE, C9PR, and HC9PR obtained by the Starink method were 188. 97, 170.95, 159.69, and 151.66 kJ/mol, respectively, suggesting that bio-based resins exhibited better high-temperature stability than cycloaliphatic or aromatic petro-based resins thanks to their unique tricyclic phenanthrene structures, and the high-temperature stability of resins mildly would decrease after hydromodification due to the cracking of saturated bonds, which was well supported by TG−FTIR/MS analyses. Possible pyrolysis pathways were proposed.

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Adhesion and viscoelastic property of poly(ethylene-co-vinyl acetate) based hot melt adhesives- effects of tackifier and wax

Cited by 13 publications

References 12 publications

Rheology and Tack Properties of Biodegradable Isodimorphic Poly(butylene succinate)-Ran-Poly(ε-caprolactone) Random Copolyesters and Their Potential Use as Adhesives

Rheology and Tack Properties of Biodegradable Isodimorphic Poly(butylene succinate)-Ran-Poly(ε-caprolactone) Random Copolyesters and Their Potential Use as Adhesives

Hot-Melt and Pressure-Sensitive Adhesives Based on Styrene-Isoprene-Styrene Triblock Copolymer, Asphaltene/Resin Blend and Naphthenic Oil

High-Temperature Stability and Pyrolysis Kinetics and Mechanism of Bio-Based and Petro-Based Resins Using TG–FTIR/MS

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