Naslov
Estimation of the porous structure parameters of the crosslinked macroporous poly(GMA-co-EGDMA). 1. Estimation of the specific pore volume

Autori
Bogdanić, Grozdana ; Jovanović, M. Slobodan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
ESAT 2011 - Book of Abstract / A. Victorov - Sankt Peterburg : Saint Petersburg State University, Russian Academy of Sciences, 2011, 304-305

Skup
25st European Seminar on Applied Thermodynamics, ESAT 2011

Mjesto i datum
Sankt Peterburg, Ruska Federacija, 24.06.2011. - 27.06.2011

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
porous structure parameters; crosslinked macroporous poly(GMA-co-EGDMA); estimation of the specific pore volume

Sažetak
New results of a project dealing with crosslinked macroporous poly(GMA-co-EGDMA) are reported in this presentation. Several macroporous crosslinked poly(GMA-co-EGDMA) have been synthesised earlier by the suspension copolymerization of glycidyl methacrylate (GMA) with ethylene glycol dimethacrylate (EGDMA) in presence of the inert component which contained 90 mass % of cyclohexanol [cy(CH2)5CHOH] and 10 mass % of six different aliphatic alcohols, such as butanol, octanol, decanol, dodecanol, tetradecanol and hexadecanol. Azobisisobutyronitrile was used as the initiator. Syntheses and copolymers characterisation was thoroughly described in references 1–3. The porosity parameters obtained from experiments [the specific surface area (Ssexp), the specific pore volume (Vsexp), the total open porosity (Pexp) and the pore diameter (dpexp)] are summarized in Table 1. An interest in poly(GMA-co-EGDMA) copolymers has been raised since their properties can be adjusted to various application. Among other factors, the applicability is strongly dependent on their porosity. Due to that we tried to find out a way to predict the porous structure parameters. The attempt of this presentation is to illustrate the ability how to estimate the specific pore volume (Vs) based on van der Waals volumes by Bondi4, 5 which may be considered as the best expression for different chemical groups occupancy. Estimated values of the specific pore volume (Vscal) and absolute deviations are shown in Table 1. It can be seen that in the so-called “first approximation” the specific pore volume of poly(GMA-co-EGDMA) copolymers may be predicted within an average mean deviation of 8.2 % only. Table 1. Porous structure parameters of the investigated poly(GMA-co-EGDMA) Copolymer Inert component in the feed Ssexp (m2/g) Vsexp (cm3/g) Pexp (%) dpexp (nm) Vscal (cm3/g) ΔVs (%) 1 cy(CH2)5CHOH + CH3(CH2)3OH 70 0.58 41 44 0.57 1.7 2 cy(CH2)5CHOH + CH3(CH2)7OH 56 0.55 40 47 0.61 10.2 3 cy(CH2)5CHOH + CH3(CH2)9OH 53 0.56 40 48 0.62 11.4 4 cy(CH2)5CHOH + CH3(CH2)11OH 50 0.61 42 53 0.64 5.3 5 cy(CH2)5CHOH + CH3(CH2)13OH 47 0.74 47 68 0.66 10.8 6 cy(CH2)5CHOH + CH3(CH2)15OH 43 0.76 47 87 0.68 9.6 ΔVsaver (%) 8.2 References [1] S. M. Jovanović et al., Angew. Makrom. Chem., 1994, 219, 161–169. [2] S. M. Jovanović et al., Mater. Sci. Forum, 1996, 214, 155–162. [3] S. M. Jovanović et al., Hem. Ind., 2000, 54, 471–479. (in Engl.) [4] A. Bondi, J. Phys. Chem., 1964, 68, 441–451. [5] A. Bondi, Physical Properties of Molecular Crystals, Liquids and Glasses, Wiley, New York, 1968.

Izvorni jezik
Engleski

Znanstvena područja
Temeljne tehničke znanosti

POVEZANOST RADA