Polycarbonates as temporary adhesives

Fritz, Nathan; Dao, Huy Linh; Allen, Sue Ann Bidstrup; Kohl, Paul A.

doi:10.1016/j.ijadhadh.2012.04.001

Cited by 17 publications

(9 citation statements)

References 8 publications

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“…Various types of polycarbonates have been studied including poly(ethylene carbonate), poly(propylene carbonate) (PPC), poly(butylene carbonate) (PBC), poly(cyclohexene carbonate) (PCHC), poly(norbornene carbonate) (PNC), and poly(cyclohexene propylene carbonate) (PCPC) [20,27,30]. PCPC is a random copolymer of PPC and PCHC [31]. The chemical structures of the polycarbonates are shown in Fig.…”

Section: Types Of Polymersmentioning

confidence: 99%

“…PPC swells in cyclohexane and ethyl acetate. It is insoluble in mesitylene, isopropanol, toluene, and xylenes [31].…”

Section: Types Of Polymersmentioning

confidence: 99%

“…The thermal degradation temperature of neat PPC (i.e., no PAG added, as received) occurs around 200 C, whereas the photo-induced and thermally induced acid-catalyzed decomposition temperatures are about 100 C and 180 C, respectively (50 wt. % loss temperature is often reported) [19,31]. The catalytic activity is due to acid regeneration after each subsequent PPC decomposition cycle [31,37,56].…”

Section: Types Of Polymersmentioning

confidence: 99%

“…% loss temperature is often reported) [19,31]. The catalytic activity is due to acid regeneration after each subsequent PPC decomposition cycle [31,37,56]. Jayachandran et al used mass spectrometry with electron impact ionization to detect the evolved species during PPC depolymerization and product evolution at 110 C and 300 C and constructed a mechanistic scheme for acid-catalyzed PPC decomposition in the presence of a diphenyliodonium-type PAG, 4-methylphenyl[4-(1-methylpropyl)phenyl]iodonium tetrakis(pentafluorophenyl) borate).…”

Section: Types Of Polymersmentioning

confidence: 99%

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Decomposable and Template Polymers: Fundamentals and Applications

Uzunlar

Schwartz

Phillips

et al. 2016

Journal of Electronic Packaging

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Polymers can be used as temporary place holders in the fabrication of embedded air gaps in a variety of electronic devices. Embedded air cavities can provide the lowest dielectric constant and loss for electrical insulation, mechanical compliance in devices where low-force deformations are desirable, and can temporarily protect movable parts during processing. Several families of polymers have been used as sacrificial, templating polymers including polycarbonates, polynorbornenes (PNBs), and polyaldehydes. The families can be distinguished by chemical structure and decomposition temperature. The decomposition temperature ranges from over 400 °C to below room temperature in the case of low ceiling temperature polymers. Overcoat materials include silicon dioxide, polyimides, epoxy, and bis-benzocyclobutene (BCB). The methods of air-gap fabrication are discussed. Finally, the use of photoactive compounds in the patterning of the sacrificial polymers is reviewed.

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Section: Types Of Polymersmentioning

confidence: 99%

“…PPC swells in cyclohexane and ethyl acetate. It is insoluble in mesitylene, isopropanol, toluene, and xylenes [31].…”

Section: Types Of Polymersmentioning

confidence: 99%

Section: Types Of Polymersmentioning

confidence: 99%

Section: Types Of Polymersmentioning

confidence: 99%

See 2 more Smart Citations

Decomposable and Template Polymers: Fundamentals and Applications

Uzunlar

Schwartz

Phillips

et al. 2016

Journal of Electronic Packaging

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“…The adhesives of degradation-induced debonding compose of degradable polymers [13]. The adhesive broke down into small molecules, and the peel strength reduced considerably when it was exposed to light or heat [14].…”

Section: Introductionmentioning

confidence: 99%

The effect of surface morphology on the peel performance of UV-induced adhesion-reducing adhesives

Ren

et al. 2022

Mater. Res. Express

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In this paper, end-hydroxy fumaryl chloride-diol copolyesters (EHFDCP) with different double bond contents were prepared by the reaction of fumaryl chloride and diols. The molecular weight of the target hydroxy polyesters was controlled to be essentially the same, EHFDCP prepared from 1,8-octanediol, 1,5-pentanediol and ethylene glycol named EHFDCP-1, EHFDCP-2 and EHFDCP-3, respectively. The UV-induced adhesion-reducing adhesives (ARA) were prepared with EHFDCP, isophorone diisocyanate (IPDI), chain extender and photoinitiator. The ARA-1, ARA-2 and ARA-3 were produced by EHFDCP-1, EHFDCP-2 and EHFDCP-3, respectively. After UV curing, all the surfaces of ARA-1, ARA-2, and ARA-3 had a high number of concave and convex areas, which helped to reduce the contact area between the adhesive and the substrate surface. The surface roughness of ARA-2 is the highest and the adhesion reduction effect is the most significant. The higher surface roughness of ARA-2 came from moderate double bond content and crosslinking density. With the increasing photoinitiator content, the 180° peel strength after UV curing decreased. The 180° peel strength of ARA-2 was reduced to 0.16 N/25mm at 4 wt% of photoinitiator content, and it also had a high initial 180° peel strength of 18.55 N/25mm due to the absence of small molecule polyfunctional monomers.

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Renaissance of aliphatic polycarbonates: New techniques and biomedical applications

Feng

Song

2013

J of Applied Polymer Sci

134

122

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Aliphatic polycarbonates were discovered a long time ago, with their conventional applications mostly limited to low molecular weight oligomeric intermediates for copolymerization with other polymers. Recent developments in polymerization techniques have overcome the difficulty in preparing high molecular weight aliphatic polycarbonates. These in turn, along with new functional monomers, have enabled the preparation of a wide range of aliphatic polycarbonates with diverse chemical compositions and structures. This review summarizes the latest polymerization techniques for preparing well-defined functional aliphatic polycarbonates, as well as the new applications of those aliphatic polycarbonates, esecially in the biomedical field.

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Polycarbonates as temporary adhesives

Cited by 17 publications

References 8 publications

Decomposable and Template Polymers: Fundamentals and Applications

Decomposable and Template Polymers: Fundamentals and Applications

The effect of surface morphology on the peel performance of UV-induced adhesion-reducing adhesives

Renaissance of aliphatic polycarbonates: New techniques and biomedical applications

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