Extension of the 'Inorganic Gel Casting' Process to the
Manufacturing of Boro-Alumino-Silicate Glass Foams

J 2018

Extension of the 'Inorganic Gel Casting' Process to the Manufacturing of Boro-Alumino-Silicate Glass Foams

ROMERO, AR., S. TAMBURINI, G. TAVERI, Jaromír TOUŠEK, I. DLOUHY et. al.

Basic information

Original name

Extension of the 'Inorganic Gel Casting' Process to the Manufacturing of Boro-Alumino-Silicate Glass Foams

Name in Czech

Rozšíření procesu "odlévání anorganických gelů" na výrobu skleněných pěn Boro-hlinitosilikátového skla

Authors

ROMERO, AR. (380 Italy), S. TAMBURINI (380 Italy), G. TAVERI (380 Italy), Jaromír TOUŠEK (203 Czech Republic, guarantor, belonging to the institution), I. DLOUHY (380 Italy) and E. BERNARDO (380 Italy)

Edition

Materials, Basel, MDPI AG, 2018, 1996-1944

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10302 Condensed matter physics

Country of publisher

Switzerland

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 2.972

RIV identification code

RIV/00216224:14740/18:00106475

Organization unit

Central European Institute of Technology

DOI

http://dx.doi.org/10.3390/ma11122545

UT WoS

000456419200203

Keywords (in Czech)

recyklování skla

Keywords in English

glass recycling; alkali activation; gel casting; glass foams

Abstract

ORIG CZ

V originále

A new technique for the production of glass foams, based on alkali activation and gel casting, previously applied to soda-lime glass, was successfully extended to boro-alumino-silicate glass, recovered from the recycling of pharmaceutical vials. A weak alkali activation (2.5 M NaOH or NaOH/KOH aqueous solutions) of fine glass powders (below 70 mu m) allowed for the obtainment of well-dispersed concentrated aqueous suspensions, undergoing gelation by treatment at low temperature (75 degrees C). Unlike soda-lime glass, the progressive hardening could not be attributed to the formation of calcium-rich silicate hydrates. The gelation was provided considering the chemical formulation of pharmaceutical glass (CaO-free) to the formation of hydrated sodium alumino-silicate (N-A-S-H) gel. An extensive direct foaming was achieved by vigorous mechanical stirring of partially gelified suspensions, comprising also a surfactant. A sintering treatment at 700 degrees C, was finally applied to stabilize the cellular structures.

In Czech

Nová technologie výroby skleněných pěn, založená na alkalické aktivaci a gelovém odlévání, která byla předtím aplikována na sodno-vápenaté sklo, byla úspěšně rozšířena na boro-alumino-silikátové sklo.

Links

LM2015043, research and development project

Name: Česká infrastruktura pro integrativní strukturní biologii (Acronym: CIISB)

Investor: Ministry of Education, Youth and Sports of the CR

Citovat

ROMERO, AR., S. TAMBURINI, G. TAVERI, Jaromír TOUŠEK, I. DLOUHY and E. BERNARDO. Extension of the 'Inorganic Gel Casting' Process to the Manufacturing of Boro-Alumino-Silicate Glass Foams. Materials. Basel: MDPI AG, 2018, vol. 11, No 12, p. 1-12. ISSN 1996-1944. Available from: https://dx.doi.org/10.3390/ma11122545.

@article{1503207,
   author = {Romero, AR. and Tamburini, S. and Taveri, G. and Toušek, Jaromír and Dlouhy, I. and Bernardo, E.},
   article_location = {Basel},
   article_number = {12},
   doi = {http://dx.doi.org/10.3390/ma11122545},
   keywords = {glass recycling; alkali activation; gel casting; glass foams},
   language = {eng},
   issn = {1996-1944},
   journal = {Materials},
   title = {Extension of the 'Inorganic Gel Casting' Process to the Manufacturing of Boro-Alumino-Silicate Glass Foams},
   volume = {11},
   year = {2018}
}

TY  - JOUR
ID  - 1503207
AU  - Romero, AR. - Tamburini, S. - Taveri, G. - Toušek, Jaromír - Dlouhy, I. - Bernardo, E.
PY  - 2018
TI  - Extension of the 'Inorganic Gel Casting' Process to the Manufacturing of Boro-Alumino-Silicate Glass Foams
JF  - Materials
VL  - 11
IS  - 12
SP  - 1-12
EP  - 1-12
PB  - MDPI AG
SN  - 19961944
KW  - glass recycling
KW  - alkali activation
KW  - gel casting
KW  - glass foams
N2  - A new technique for the production of glass foams, based on alkali activation and gel casting, previously applied to soda-lime glass, was successfully extended to boro-alumino-silicate glass, recovered from the recycling of pharmaceutical vials. A weak alkali activation (2.5 M NaOH or NaOH/KOH aqueous solutions) of fine glass powders (below 70 mu m) allowed for the obtainment of well-dispersed concentrated aqueous suspensions, undergoing gelation by treatment at low temperature (75 degrees C). Unlike soda-lime glass, the progressive hardening could not be attributed to the formation of calcium-rich silicate hydrates. The gelation was provided considering the chemical formulation of pharmaceutical glass (CaO-free) to the formation of hydrated sodium alumino-silicate (N-A-S-H) gel. An extensive direct foaming was achieved by vigorous mechanical stirring of partially gelified suspensions, comprising also a surfactant. A sintering treatment at 700 degrees C, was finally applied to stabilize the cellular structures.
ER  -

ROMERO, AR., S. TAMBURINI, G. TAVERI, Jaromír TOUŠEK, I. DLOUHY and E. BERNARDO. Extension of the 'Inorganic Gel Casting' Process to the Manufacturing of Boro-Alumino-Silicate Glass Foams. \textit{Materials}. Basel: MDPI AG, 2018, vol.~11, No~12, p.~1-12. ISSN~1996-1944. Available from: https://dx.doi.org/10.3390/ma11122545.

Detailed Information on Publication Record