Synthesis of Poly(lactic acid)-block-poly(N,N-dimethylaminoethyl methacrylate) Copolymers with Controllable Block Structures via Reversible Addition Fragmentation Polymerization from Aminolyzed Poly(lactic acid)

<table class="fixed-width table-group" id="tab1"><tr><td><table class="table"><colgroup><col style="width:10.53em"/><col style="width:5.95em"/><col style="width:7.58em"/><col style="width:3.66em"/><col style="width:9.69em"/></colgroup><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">ID</td><td class="align_center">Time (min)</td><td class="align_center"><svg height="12.9866pt" id="M24" style="vertical-align:-4.3507pt" version="1.1" viewbox="-0.0498162 -8.6359 39.8483 12.9866" width="39.8483pt" 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="M962 650H795L470 145L347 650H176L170 622C268 613 275 606 244 503L190 322C150 188 132 126 118 91C102 50 80 33 18 28L12 0H245L251 28C175 35 170 48 174 93C177 128 191 180 220 284L292 542H294C331 392 383 150 409 4H432L774 555H776L714 137C700 40 694 34 612 28L606 0H868L874 28C793 34 784 37 797 137L849 533C859 612 863 616 956 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class="align_center"><span style="width: 31.9655ptpx;"><svg height="12.83pt" id="M25" style="vertical-align:-4.35069pt" version="1.1" viewbox="-0.0498162 -8.47931 31.9655 12.83" width="31.9655pt" 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="M138 649L132 622C212 614 219 612 203 526L170 358H62L53 321H163L124 118C108 38 101 35 25 27L17 0H232C358 0 451 19 540 75C644 143 706 256 706 381C706 572 575 649 387 649H138ZM244 321H399L407 358H252L292 568C296 593 302 601 314 607S350 616 385 616C557 616 611 508 611 388C611 219 517 37 290 36C261 36 238 40 222 49C201 61 200 78 210 136L244 321Z" id="g185-29"></path></g><g transform="matrix(.0091,0,0,-0.0091,9.347,3.132)"><path d="M98 134C72 134 46 117 46 90C46 73 55 65 60 64C95 55 124 32 124 -4C124 -42 95 -68 44 -89L57 -123C122 -104 194 -60 194 22C194 94 136 134 98 134Z" id="g50-45"></path></g><g transform="matrix(.0091,0,0,-0.0091,13.577,3.132)"><path d="M692 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516 -3 592 -7C603 -8 615 -8 627 -8L631 18ZM212 316V563C212 591 215 602 223 607C231 613 248 617 277 617C352 617 423 577 423 469C423 415 407 375 368 345C343 324 310 316 260 316H212Z" id="g190-83"></path></g></svg> (wt%)</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">PLA<sub>345</sub>-PDMAEMA<sub>0</sub></td><td class="align_center">0</td><td class="align_center">24900</td><td class="align_center">1.75</td><td class="align_center">/</td></tr><tr><td class="align_left">PLA<sub>345</sub>-PDMAEMA<sub>9</sub></td><td class="align_center">1</td><td class="align_center">26300</td><td class="align_center">1.36</td><td class="align_center">5.1</td></tr><tr><td class="align_left">PLA<sub>345</sub>-PDMAEMA<sub>60</sub></td><td class="align_center">3</td><td class="align_center">34400</td><td class="align_center">1.23</td><td class="align_center">32.6</td></tr><tr><td class="align_left">PLA<sub>345</sub>-PDMAEMA<sub>213</sub></td><td class="align_center">10</td><td class="align_center">58400</td><td class="align_center">1.32</td><td class="align_center">66.7</td></tr><tr><td class="align_left">PLA<sub>217</sub>-PDMAEMA<sub>0</sub></td><td class="align_center">0</td><td class="align_center">10200</td><td class="align_center">1.67</td><td class="align_center">/</td></tr><tr><td class="align_left">PLA<sub>217</sub>-PDMAEMA<sub>47</sub></td><td class="align_center">2</td><td class="align_center">17600</td><td class="align_center">1.75</td><td class="align_center">21.8</td></tr><tr><td class="align_left">PLA<sub>217</sub>-PDMAEMA<sub>63</sub></td><td class="align_center">3</td><td class="align_center">20100</td><td class="align_center">1.71</td><td class="align_center">37.9</td></tr><tr><td class="align_left">PLA<sub>217</sub>-PDMAEMA<sub>79</sub></td><td class="align_center">4</td><td class="align_center">22700</td><td class="align_center">1.67</td><td class="align_center">63.4</td></tr><tr><td class="align_left">PLA<sub>103</sub>-PDMAEMA<sub>0</sub></td><td class="align_center">0</td><td class="align_center">7280</td><td class="align_center">1.56</td><td class="align_center">/</td></tr><tr><td class="align_left">PLA<sub>103</sub>-PDMAEMA<sub>40</sub></td><td class="align_center">2</td><td class="align_center">13600</td><td class="align_center">1.62</td><td class="align_center">47.9</td></tr><tr><td class="align_left">PLA<sub>103</sub>-PDMAEMA<sub>57</sub></td><td class="align_center">4</td><td class="align_center">16300</td><td class="align_center">1.78</td><td class="align_center">75.3</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Molar weight (<i>Mn</i>), polydispersity (<svg height="8.52913pt" id="M22" style="vertical-align:-0.04981995pt" version="1.1" viewbox="-0.0498162 -8.47931 9.48169 8.52913" width="9.48169pt" 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="M138 649L132 622C212 614 219 612 203 526L170 358H62L53 321H163L124 118C108 38 101 35 25 27L17 0H232C358 0 451 19 540 75C644 143 706 256 706 381C706 572 575 649 387 649H138ZM244 321H399L407 358H252L292 568C296 593 302 601 314 607S350 616 385 616C557 616 611 508 611 388C611 219 517 37 290 36C261 36 238 40 222 49C201 61 200 78 210 136L244 321Z" id="g185-29"></path></g></svg>) of the synthesized PLA-PDMAEMA block copolymers, and mass ratio of PDMAEMA blocks <svg height="12.7178pt" id="M23" style="vertical-align:-3.42947pt" version="1.1" viewbox="-0.0498162 -9.28833 62.921 12.7178" width="62.921pt" 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="M300 -147C201 -63 143 98 143 270S200 602 300 686L282 710C136 610 70 450 70 271V270C70 89 136 -72 282 -170L300 -147Z" id="g113-41"></path></g><g transform="matrix(.013,0,0,-0.013,4.498,0)"><path d="M619 670C619 686 593 712 555 712S459 686 410 634S335 504 320 430H250L219 400L222 388H312L258 73C223 -133 201 -166 187 -180C175 -191 158 -199 140 -199C123 -199 88 -188 74 -172C68 -166 63 -164 54 -171C38 -185 23 -201 23 -215C23 -236 60 -261 93 -261C122 -261 161 -247 207 -200C268 -138 300 -71 337 94C365 220 376 277 394 387L501 399L521 430H401C432 623 464 665 501 665C524 665 544 651 567 627C577 617 583 618 592 625C601 631 619 651 619 670Z" id="g113-103"></path></g><g transform="matrix(.0091,0,0,-0.0091,11.219,3.132)"><path d="M46 650V618C122 613 130 611 130 522V128C130 46 123 40 40 32V0H319V32C227 40 217 42 217 128V279L292 260C303 259 322 258 338 261C436 272 534 337 534 467C534 534 508 580 469 609C428 640 371 650 299 650H46ZM217 558C217 585 220 596 228 603C235 610 256 615 284 615C367 615 435 571 435 463C435 339 358 304 291 304C256 304 229 310 217 317V558Z" id="g58-78"></path></g><g transform="matrix(.0091,0,0,-0.0091,16.433,3.132)"><path d="M43 650V617C122 612 130 606 130 522V128C130 44 122 37 34 32V0H275C400 0 497 25 573 82C652 142 698 229 698 350C698 445 662 518 613 565C549 625 456 650 327 650H43ZM217 544C217 580 220 591 229 599C240 607 264 613 311 613C380 613 437 599 482 570C561 523 598 436 598 336C598 177 511 40 324 40C248 40 217 61 217 135V544Z" id="g58-66"></path></g><g transform="matrix(.0091,0,0,-0.0091,23.103,3.132)"><path d="M871 0V33C783 41 780 45 777 152L768 506C765 610 771 609 860 617V650H683L453 157L228 650H59V617C150 609 154 606 146 481L132 275C124 170 117 125 112 93C105 50 84 39 27 34V0H267V34C200 39 176 48 173 93C170 130 171 172 176 256L190 540H192L414 8H438L682 554H685L689 152C689 45 686 41 604 33V0H871Z" id="g58-75"></path></g><g transform="matrix(.0091,0,0,-0.0091,31.311,3.132)"><path d="M682 0V33C615 38 603 49 571 134C507 305 441 494 378 665L343 655L136 136C101 48 86 41 22 33V0H246V33C170 41 161 50 183 112C196 152 209 192 224 232H441C461 176 478 126 493 87C504 49 499 41 433 33V0H682ZM425 279H242C273 363 303 448 335 533H337L425 279Z" id="g58-63"></path></g><g transform="matrix(.0091,0,0,-0.0091,37.709,3.132)"><path d="M522 166C507 123 488 90 472 71C449 44 419 38 347 38C296 38 261 38 242 51C223 63 217 85 217 132V315H311C398 315 406 310 419 239H453V433H419C406 365 401 358 311 358H217V580C217 609 219 612 251 612H331C400 612 427 604 440 584C453 561 463 541 472 498L506 502C501 558 497 627 497 650H43V618C122 610 130 609 130 520V128C130 46 121 40 30 32V0H521C529 30 552 128 557 162L522 166Z" id="g58-67"></path></g><g transform="matrix(.0091,0,0,-0.0091,42.987,3.132)"><path d="M871 0V33C783 41 780 45 777 152L768 506C765 610 771 609 860 617V650H683L453 157L228 650H59V617C150 609 154 606 146 481L132 275C124 170 117 125 112 93C105 50 84 39 27 34V0H267V34C200 39 176 48 173 93C170 130 171 172 176 256L190 540H192L414 8H438L682 554H685L689 152C689 45 686 41 604 33V0H871Z" id="g58-75"></path></g><g transform="matrix(.0091,0,0,-0.0091,51.195,3.132)"><path d="M682 0V33C615 38 603 49 571 134C507 305 441 494 378 665L343 655L136 136C101 48 86 41 22 33V0H246V33C170 41 161 50 183 112C196 152 209 192 224 232H441C461 176 478 126 493 87C504 49 499 41 433 33V0H682ZM425 279H242C273 363 303 448 335 533H337L425 279Z" id="g58-63"></path></g><g transform="matrix(.013,0,0,-0.013,58.264,0)"><path d="M275 270C275 450 212 609 64 710L45 686C145 604 203 442 203 270S147 -63 45 -147L64 -170C213 -68 275 89 275 270Z" id="g113-42"></path></g></svg> in the copolymers.</div>

International Journal of Polymer Science

tab1

Table 1

Table 1: Synthesis of Poly(lactic acid)-block-poly(N,N-dimethylaminoethyl methacrylate) Copolymers with Controllable Block Structures via Reversible Addition Fragmentation Polymerization from Aminolyzed Poly(lactic acid) 

Table 1 | Synthesis of Poly(lactic acid)-block-poly(N,N-dimethylaminoethyl methacrylate) Copolymers with Controllable Block Structures via Reversible Addition Fragmentation Polymerization from Aminolyzed Poly(lactic acid) 