Measurement of the fracture toughness of polymer-non-polymer interfaces

Smith, J. J.; Krämer, Edward J.; Xiao, Fei; Hui, Chung‐Yuen; Reichert, Werner Franz; Brown, Hugh R.

doi:10.1007/bf00351260

Cited by 30 publications

(26 citation statements)

References 15 publications

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“…Equation ( 2 ) has been experimentally and numerically proven reasonably valid as the beam geometry was kept 0.5 ≤ h 2 /h 1 ≤ 2, where h 1 is the thickness of the stiffer material compared with the other 51 , 52 , 54 . There are two precautions we need to obey.…”

Section: Methodsmentioning

confidence: 99%

“…There are two precautions we need to obey. The first one is that mechanical asymmetry of the beams ( E 1 /E 2 ≫ 1) would lead to overestimation of G c and G due to a large non-zero phase angle at the crack tip which results in the crack deviating into the ductile side from the interface 50 – 52 , 54 – 56 . To avoid this, the Al beam, which was the stiffer material in this study, should be made thinner than the PI beam.…”

Section: Methodsmentioning

confidence: 99%

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Organic-Inorganic Solid-State Hybridization with High-Strength and Anti-Hydrolysis Interface

Yang

Kao

Shigetou

2019

Sci Rep

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Organic-inorganic material hybridization at the solid-state level is indispensable for the integration of IoT applications, but still remains a challenging issue. Existing bonding strategies in the field of electronic packaging tend to employ vacuum or ultrahigh temperature; however, these can cause process complications and material deterioration. Here we report an easy-to-tune method to achieve hybrid bonding at the solid-state level and under the ambient atmosphere. Vacuum-ultraviolet (VUV)-induced reorganization with ethanol was used to develop hydroxyl-carrying alkyl chains through coordinatively-bonded carboxylate onto aluminum, whereas numerous hydroxyl-carrying alkyls were created on polyimide. The triggering of dehydration through these hydroxyls by merely heating at 150 °C for a few minutes produced robust organic-inorganic reticulated complexes within the aluminum/polyimide interface. The as-bonded aluminum/polyimide interface possessed an superior fracture energy of (2.40 ± 0.36) × 103 (J/m2) compared with aluminum and polyimide matrices themselves, which was mainly attributed to crack deflection due to the nano-grains of inorganic-organic reticulated complexes. The interfacial adhesion was successfully kept after humidity test, which was contributed by those anti-hydrolytic carboxylates. To the best of our knowledge, for the first time organic-inorganic bonding at the solid-state level was achieved using the ethanol-assisted VUV (E-VUV) process, a strategy which should be applicable to a diversity of plastics and metals with native oxides.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Organic-Inorganic Solid-State Hybridization with High-Strength and Anti-Hydrolysis Interface

Yang

Kao

Shigetou

2019

Sci Rep

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“…In the case of planar interfaces enhanced via reactive compatibilization, the interfacial adhesion is characterized by the fracture toughness ( G c ) of that. It has been shown that an asymmetric double cantilever beam (ADCB) test is a reliable test for measuring G c of polymer–polymer interfaces [104–106]. It involves propagating a crack along the interface between two polymer beams using a wedge.…”

Section: Reaction Kinetics and Mechanismsmentioning

confidence: 99%

Reinforcement of adhesion and development of morphology at polymer–polymer interface via reactive compatibilization: A review

Jiang

Guo

2010

Polymer Engineering & Sci

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Polymer blending is a common and effective way to develop new materials with desirable physical and mechanical properties. Since most polymer pairs are immiscible, reactive compatibilization has been extensively studied to stabilize morphology of polymer blends and improve their mechanical properties. In the past several years, considerable interest has been expressed in understanding the fundamental kinetics and mechanisms of the interfacial reaction, investigating the reinforcement of the interfacial adhesion and the development of morphological structure at polymer-polymer interface induced by the interfacial reaction. The present review focused on some theoretical and experimental results that include the formation and growth of copolymers at the interface, and also the major factors such as reaction conditions, the concentration and bulk properties of the functionalized polymer, the thermodynamic interaction between the functionalized polymer and the matrix, which can influence the interfacial adhesion and morphological development. POLYM. ENG. SCI

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“…[1][2][3][4][5][6][7][8] and, in particular as it pertains to interfaces and adhesive joints. A very recent paper [4] explored these latter two topics in great detail and gave experimental evidence for a strong influence of the mode-mix ratio on the interfacial fracture toughness in an adhesive joint.…”

Section: Introductionmentioning

confidence: 99%

“…Extremely large increases in G~ are shown, such that at a phase angle of zero the value of G~ is about 30 J/m 2 whilst at ( 9 + g0) = -3 5 ° then G~ ~ 120 J/m 2. It should be noted that such a relationship can be described in terms of an empirical expression of the form (see (7) in [4]):…”

Section: Introductionmentioning

confidence: 99%

Comments on mixed-mode fracture in adhesive joints

et al. 1996

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We have employed the asymmetric double cantilever beam (ADCB) specimen, which consists of a brittle adhesive bonding aluminium-alloy substrates, to measure the toughness, G~. We have investigated whether the ratio of the heights of the specimen arms (i.e. defined by the parameter A, where A = hi/h2) has any significant effect on the value of G~. We find no significant effects, and compare our results to those previously reported where a dramatic effect was found, but could not be explained.

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Measurement of the fracture toughness of polymer-non-polymer interfaces

Cited by 30 publications

References 15 publications

Organic-Inorganic Solid-State Hybridization with High-Strength and Anti-Hydrolysis Interface

Organic-Inorganic Solid-State Hybridization with High-Strength and Anti-Hydrolysis Interface

Reinforcement of adhesion and development of morphology at polymer–polymer interface via reactive compatibilization: A review

Comments on mixed-mode fracture in adhesive joints

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