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Poly /CaCO

The purification of j8-poly(L-malic acid) from A o-basiae has been reported involving methanol precipitation of the polymer in the form of the Ca salt [5]. This is possible because a high concentration of CaCOs is present in the growth medium. Unfortunately, the polymer acid is not soluble in aceton thus missing an additional purification step. In our hands, purification of jS-poly(L-malate) from several Aureobasidiae strains was unsatisfactory because of low yields and resisting impurities. [Pg.94]

R. T. Borchardt. Effects of poly( ethylene glycol) on efflux transporter activity in Caco-2 cell monolayers,/. Pharm. Sci. 2002, 91, 1980-1990... [Pg.86]

Lin YH, Chung CK, Chen CT et al (2005) Preparation of nanoparticles composed of chitosan/ poly-y-glutamic acid and evaluation of their permeability through Caco-2 cells. Biomacromolecules 6 1104-1112... [Pg.60]

Collnot EM, Baldes C, Wempe MF, Hyatt J, Navarro L, Edgar KJ, Schaefer UF, Lehr CM (2006) Influence of vitamin E TPGS poly(ethylene glycol) chain length on apical efflux transporters in Caco-2 cell monolayers. J Control Release 111 35-40. [Pg.207]

FIGURE 4.3 Proportion of poly(methyl methacrylate) microparticles attached to Caco-2 cells after 15, 30, 60, and 120 min incubation periods. (From Tao, S.I., Lubeley, M.W., and Desai, T.A., J. Control. Release, 88, 215, 2003. With permission). [Pg.76]

Bromberg, L., and V. Alakhov. 2003. Effects of polyether-modified poly(acrylic acid) microgels on doxorubicin transport in human intestinal epithelial Caco-2 cell layers. J Control Release 88 11. [Pg.106]

Kriwet, B., and Kissel, T. Poly(acrylic acid) microparticles widen the intercellular spaces of Caco-2 cell monolayers An examination by confocal laser scanning microscopy. Eur. J. Pharm. Biopharm. 42 233-240, 1996. [Pg.335]

Figure 2. Effect of polymer concentration on Cu(II)-induced changes in rotation of single-stranded poly(A) and poly(C) at pH 6 in 0.1M NaClOji and 0.01 M caco-dylate. 6r is fractional change in rotation = [a] — [aj/ [a](j — [a]0 where [a] = rotation at given Cu2+ activity, [aj = rotation in the absence of Cu2+, and [ad] = rotation of fully disordered structure. A poly(A), B poly(C). Concentrations (A) 5 X I0"4M 5 X 10 5M (Oj5 X... Figure 2. Effect of polymer concentration on Cu(II)-induced changes in rotation of single-stranded poly(A) and poly(C) at pH 6 in 0.1M NaClOji and 0.01 M caco-dylate. 6r is fractional change in rotation = [a] — [aj/ [a](j — [a]0 where [a] = rotation at given Cu2+ activity, [aj = rotation in the absence of Cu2+, and [ad] = rotation of fully disordered structure. A poly(A), B poly(C). Concentrations (A) 5 X I0"4M 5 X 10 5M (Oj5 X...
In experiments conducted to obtain controlled sizes of filler particles formed in a matrix, several polymers were used as the matrix. Copolymers were synthesized from polyethylene oxide (does not interact with CaCOs) and poly(methacrylic acid) (reacts with in situ crystallizing CaCOj). In the presence of polyethylene oxide, crystals grew to similar sizes as without any polymer. The presence of the poly(methacrylic acid) crystal size of CaCOa was reduced by a factor 5 to 10 depending on the concentration of the filler precursor. [Pg.493]

The results of a study of the relation between the oriented structure and drawn poly(e-caprolactone) specimens including CaCO particles, their dynamic mechanical properties and line shape analyses of CP MAS NMR spectra are presented. Solid state studies of C NMR study of poly(methyl acrylate) ionomer have been reported. ... [Pg.260]

Figure 11. Scanning electron micrographs of LDPE filled with 25% CaCO, in the presence of a hPBD/poly (acrylic acid) diblock. Figure 11. Scanning electron micrographs of LDPE filled with 25% CaCO, in the presence of a hPBD/poly (acrylic acid) diblock.
Hugger ED, Audus KL, and Borchardt RT. Effects of Poly(ethylene glycol) on Efflux Transporter Activity in Caco-2 Cell Monolayers. Sci 2002 91 ... [Pg.213]

Y. Lin, C. Chung, C. Chen, H. Liang, S. Chen, H. Sung, Preparation of nanoparticles composed of chitosan/poly-y-glutamic add and evaluation of their permeabiUty through caco-2 cells. Biomacromolecules 6 (2) (2005) 1104-1112. [Pg.88]

L. Wang, B. Sun, K.S. Ziemer, G.A. Barabino, R.L. Carrier, Chemical and physical modifications to poly(dimethylsiloxane) surfaces affect adhesion of Caco-2 cells, J. Biomed. Mater. Res. A 93 (4) (2010) 1260-1271. [Pg.307]

Kitchens KM, Kolhatkar RB, Swaan PW, Ghandehari H (2008) Endocytosis inhibitors prevent poly(amidoamine) dendrimer internalization and permeability across Caco-2 cells. Mol Pharm 5 364-369. doi 10.1021/mp700089s... [Pg.232]

Kitchens KM, Foraker AB, Kolhatkar RB et al (2007) Endocytosis and interaction of poly (amidoamine) dendrimers with Caco-2 cells. Pharm Res 24 2138-2145. doi 10.1007/sll095-007-9415-0... [Pg.232]

Particulate-filled composites are widely used in many fields of application. The filler used in largest quantity is CaCOs, which is added mainly to poly(vinyl chloride), but significant amounts are used also in polypropylene, polyethylene and other polymers. Typical products prepared from CaCOs-filled composites are sewer and drainage pipes, garden furniture and breathable films [1]. The properties of particulate-filled polymers are determined by several factors, of which interfacial interactions are extremely important [2, 3]. Particle-particle and... [Pg.134]

See other pages where Poly /CaCO is mentioned: [Pg.660]    [Pg.60]    [Pg.296]    [Pg.49]    [Pg.99]    [Pg.63]    [Pg.191]    [Pg.198]    [Pg.848]    [Pg.2027]    [Pg.125]    [Pg.56]    [Pg.40]    [Pg.58]    [Pg.85]    [Pg.1369]    [Pg.225]    [Pg.363]    [Pg.131]    [Pg.195]    [Pg.22]    [Pg.23]    [Pg.240]    [Pg.445]    [Pg.106]    [Pg.192]    [Pg.158]    [Pg.30]   
See also in sourсe #XX -- [ Pg.3 ]



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