Internal stress in plasma polymer films prepared by cascade arc torch polymerization

Yu, Qingsong; Yasuda, H.

doi:10.1002/(sici)1099-0518(19990601)37:11<1577::aid-pola3>3.0.co;2-8

Cited by 14 publications

(8 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Chitosan is a cationic, biocompatible, and biodegradable polymer having many biomedical applications. Several researchers have noted hydrogel structures, but crosslinked chitosan beads for a controlled release formulation is a novel approach reported to date 10–14…”

Section: Introductionmentioning

confidence: 99%

Glutaraldehyde‐crosslinked chitosan beads for controlled release of diclofenac sodium

Kulkarni¹,

Kulkarni²,

Keshavayya

2006

J of Applied Polymer Sci

View full text Add to dashboard Cite

An inexpensive and simple method was adopted for the preparation of chitosan beads, crosslinked with glutaraldehyde (GA), for the controlled release of diclofenac sodium (DS). The beads were prepared by varying the experimental conditions such as pH, temperature, and extent of crosslinking. The absence of any chemical interaction among drug, polymer, and the crosslinking agent was confirmed by FTIR and thermal analysis. The beads were characterized by microscopy, which indicated that the particles were in the size range of 500-700 mm and SEM studies revealed smooth surface and spherical shape of beads. The beads produced at higher temperature and extended exposure to GA exhibited lower drug content, whereas increased drug loading resulted in enhanced drug release.

show abstract

Section: Introductionmentioning

confidence: 99%

Glutaraldehyde‐crosslinked chitosan beads for controlled release of diclofenac sodium

Kulkarni¹,

Kulkarni²,

Keshavayya

2006

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Plasma polymerization refers to the formation of polymeric materials under the influence of plasma (partially ionized gas), a phenonemon that has been studied by many authors 1–4. The films produced by plasma polymerization are usually insoluble, pinhole free, and adhere well to substrates.…”

Section: Introductionmentioning

confidence: 99%

Studies on plasma polymerization of hexamethyldisiloxane in the presence of different carrier gases

Fang

Chen

2001

J of Applied Polymer Sci

View full text Add to dashboard Cite

Plasma polymerization of hexamethyldisiloxane(HMDSO) in the presence of different carrier gases such as H 2 , He, N 2 , Ar, and O 2 was carried out using an inductively coupled electrodeless glow discharge. The polymerization kinetics showed that the monomer HMDSO plasma-polymerized at different rates from low to high for the carrier gases H 2 , He, N 2 , Ar, and O 2 in that order. The products were studied using FTIR, electron spectroscopy for chemical analysis, and elemental analysis. The results indicated that HMDSO molecules underwent different degrees of fragmentation in plasma polymerization for different carrier gases and radio frequency (RF) powers. The polymer deposition rate and the structures of products were mainly dependent on molecular fragmentation, which varied with carrier gas and imposed RF power. O 2 and H 2 gases can incorporate in the plasma polymers to form products containing more oxygen or hydrogen components, while other gases such as N 2 have no detectable component in products.

show abstract

“…[27,28] Based on these considerations, it is proposed here that increasing P RF results in the formation of C:H PPF films with higher residual stress, in line with the literature. [29] As aforementioned in Section 1, considering hydrogen storage applications, during the "hydrogenation" reaction, a volume expansion of~33% occurs. [1,7] If containing too high internal stress, the volume expansion that the metal undergoes during the adsorption cycle might result in the formation of cracks in the polymer network offering preferential pathways for the oxidation of the Mg-based nano-objects.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Study of the synthesis of C:H coating by PECVD for protecting Mg‐based nano‐objects

Liang

Panepinto

Prince

et al. 2020

Plasma Processes & Polymers

View full text Add to dashboard Cite

In the context of protecting Mg-based nano-objects for potential hydrogen storage applications, the potential of C:H layer as a barrier polymer material deposited by the plasma-enhanced chemical vapor deposition process is examined. Corrosion tests reveal (a) good barrier properties of the C:H layer and (b) suggest an increase in the internal stress with the power dissipated in the plasma. The latter is attributed to an increase in the crosslinking density of the coatings accompanied by an increase in the stiffness as shown by nanoindentation measurements. Finally, for a given set of plasma parameters, Mg-based nanowires were successfully enrobed by the C:H coatings as evidenced by scanning electron microscopy measurements.

show abstract

Internal stress in plasma polymer films prepared by cascade arc torch polymerization

Cited by 14 publications

References 14 publications

Glutaraldehyde‐crosslinked chitosan beads for controlled release of diclofenac sodium

Glutaraldehyde‐crosslinked chitosan beads for controlled release of diclofenac sodium

Studies on plasma polymerization of hexamethyldisiloxane in the presence of different carrier gases

Study of the synthesis of C:H coating by PECVD for protecting Mg‐based nano‐objects

Contact Info

Product

Resources

About