ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

Hits per page

hits 1 - 2 | 2 hits

Sorting

Electronic Resource

Growth of poly(methyl methacrylate) particles in three-component cationic microemulsions (1995)

Gan, L. M. ; Lee, K. C. ; Chew, C. H. ; [et al.]

Bognor Regis [u.a.] : Wiley-Blackwell

Journal of Polymer Science Part A: Polymer Chemistry 33 (1995), S. 1161-1168

add to mindlist on the mindlist

Details

ISSN: 0887-624X

Keywords: microemulsion ; polymerization ; methyl methacrylate ; Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Polymerization of methyl methacrylate (MMA) has been studied in ternary microemulsions which were stabilized by tetradecyltrimethylammonium bromide (TTAB) or stearyltrimethylammonium chloride (STAC). The sizes of MMA-swollen polymer particles (Rh) increased continuously during polymerization. This is in contrast to that of the styrene system, where Rh increased very rapidly to a maximum and then decreased continuously towards a constant value. The continuous growth of PMMA particles at 60°C are discussed. The stability of PMMA latexes increased with increasing the hydrophobic chain length of the cationic surfactant used. Traces of the coagulations of PMMA particles in the TTAB system can be seen from TEM. © 1995 John Wiley & Sons, Inc.

Additional Material: 7 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/pola.1995.080330719

Permalink

	Location	Call Number	Expected	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

Electronic Resource

Bifurcation and Chaos in the Duffing Oscillator with a PID Controller (1997)

Cui, Fangsen ; Chew, C. H. ; Xu, Jianxue ; [et al.]

Springer

Nonlinear dynamics 12 (1997), S. 251-262

add to mindlist on the mindlist

Details

ISSN: 1573-269X

Keywords: Bifurcation ; chaos ; Duffingoscillator ; fractal basin boundary ; PIDcontroller

Source: Springer Online Journal Archives 1860-2000

Topics: Mathematics

Notes: Abstract We discuss in this paper the bifurcation, stability and chaos of the non-linear Duffing oscillator with a PID controller. Hopf bifurcation can occur and we show that there is a global stable fixed point. The PID controller works well in some fields of the parameter space, but in other fields of the parameter space, or if the reference input is not equal to zero, chaos is common for hard spring type system and so is fractal basin boundary for soft spring system. The Melnikov method is used to obtain the criterion of fractal basin boundary.