Gel Point Determination of TEOS-Based Polymeric Materials with Application on Conservation of Cultural Heritage Buildings

<div>(a) Elastic (solid symbols) and viscous (hollow symbols) moduli measured as a function of frequency at different reaction times at T=25°C: immediately after sample preparation (black squares), after 28 hours (red circles), after 30 hours (green triangles), and after 36 hours (pink hexagons). (b) Elastic and viscous moduli measured 31 hours after sample preparation (blue diamonds) along their corresponding fits to a power law G ~<svg height="10.0943pt" id="M14" style="vertical-align:-0.2064104pt" version="1.1" viewbox="-0.0498162 -9.88789 14.0105 10.0943" width="14.0105pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M615 290C615 392 563 448 529 448C511 448 491 441 484 434L483 425C518 400 546 349 546 273C546 158 504 46 417 46C381 46 356 77 356 142C356 184 380 293 392 334L387 340L307 323C305 288 296 228 287 188C265 94 221 52 180 52C144 52 112 89 112 171C112 278 164 372 241 430L226 454C106 394 23 288 23 155C23 40 79 -12 139 -12C184 -12 245 32 285 85C292 31 322 -12 376 -12C423 -12 470 18 501 45C570 104 615 184 615 290Z" id="g113-246"></path></g><g transform="matrix(.0091,0,0,-0.0091,8.295,-5.741)"><path d="M532 0V30C473 38 467 38 467 107V298C467 395 416 451 336 451C307 451 279 439 251 420C226 404 205 389 185 374V453C142 434 94 422 43 413V386C98 378 104 373 104 309V107C104 41 100 38 31 30V0H251V30C191 35 185 40 185 107V337C216 364 255 389 295 389C360 389 386 347 386 276V110C386 44 380 35 321 30V0H532Z" id="g58-108"></path></g></svg> (continuous lines) and 32 hours after sample preparation (dark yellow stars).</div>

Advances in Condensed Matter Physics

fig2

Figure 2

Figure 2: Gel Point Determination of TEOS-Based Polymeric Materials with Application on Conservation of Cultural Heritage Buildings 