Preparation and characterization of polyimide/organoclay nanocomposites

Autor: D. M. Delozier, James F. Cahoon, Joseph G. Smith, R. A. Orwoll, N. J. Johnston, John W. Connell

Publikováno v: Polymer. 43:813-822

Organically modified montmorrrillonite clay, containing a long chain aliphatic quarternary ammonium cation, was used to prepare polyimide/organoclay hybrids. Several approaches were examined in an attempt to achieve fully exfoliated nanocomposites. T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::38dad32eef4b39b4b121dcd486f39272
https://doi.org/10.1016/s0032-3861(01)00640-1

Processing and Properties of IM7/LARC ™ -RP46 Polyimide Composites

Autor: T H Hou, Ruth H. Pater, N J Johnston, S P Wilkinson, T L Schneiderk

Publikováno v: High Performance Polymers. 8:491-505

LARC™-RP46 resin system is a PMR type polyimide and is prepared by replacing methylenedianiline in the PMR-15 composition with 3,4′-oxydianiline. This resin system retains the same processing characteristics as PMR-15 but also offers enhanced fra

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::00705ae7992d8b2dfbdd10b42d186673
https://doi.org/10.1088/0954-0083/8/4/002

Previously undiagnosed aortic stenosis revealed by auscultation in the hip fracture population--echocardiographic findings, management and outcome

Autor: N. J. Johnston, M. E. Mcbrien, G. Heyburn, James M. Elliott, Sinead McDonald, Michael Stevenson, T. R. O. Beringer

Publikováno v: McBrien, M E, Heyburn, G, Stevenson, M, McDonald, S, Johnston, N J, Elliott, J R M & Beringer, T R O 2009, ' Previously undiagnosed aortic stenosis revealed by auscultation in the hip fracture population-echocardiographic findings, management and outcome ' Anaesthesia, vol 64, no. 8, pp. 863-870 . DOI: 10.1111/j.1365-2044.2009.05960.x

The 2001 Report of the National Confidential Enquiry into Perioperative Deaths recommended that an echocardiogram should be performed on patients with aortic stenosis prior to anaesthesia. In this study we present the patient details, management and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::318324bda68b24f2e14820befe780130
https://pubmed.ncbi.nlm.nih.gov/20236269

New aromatic silicon-containing polyamides

Autor: N. J. Johnston, J. R. Pratt

Publikováno v: Polymer Engineering and Science. 16:309-313

The experiments described were aimed at studying systematically the effect of silyl linkages on the thermogravimetric and thermomechanical properties of aromatic polyamides. Specifically, 18 aromatic silicon-containing polyamides were synthesized via

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9e3f4b074dd31c061a166750d037570d
https://doi.org/10.1002/pen.760160506

The Decomposition of Methane and Methyl Chloride in a Microwave Discharge

Autor: J. P. Wightman, N. J. Johnston

Publikováno v: Advances in Chemistry ISBN: 9780841200814
Chemical Reactions in Electrical Discharges

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e9567d28e7e1524da7b09928d0dbf54e
https://doi.org/10.1021/ba-1969-0080.ch027